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Toothless didn't just become my friend. He became the friend who gave me my purpose. [src]
  Hiccup describing his relationship with Toothless  

Toothless is Hiccup Horrendous Haddock III's Night Fury and the deuteragonist of the How to Train Your Dragon franchise.

Official Description

Once thought of as the "unholy offspring of lightning and death itself", Toothless (20 in dragon years) has proven to be much more of a giant, winged pussycat than the stuff of nightmares.
Playful, inquisitive, and intelligent, Toothless is more Hiccup's best friend than his pet. He is extremely protective of his Viking soul mate, and will stop at nothing to guard him from all harm. As the last known specimen of the Night Fury species, Toothless is indisputably special. He commands respect from dragons and humans alike.
Toothless also possesses an echolocation sense not unlike radar or sonar. When flying through dark or cramped environments, Toothless issues a plasma blast in all directions. When the plasma bounces off the nearby terrain and returns to Toothless, it gives him an incredibly accurate reading of his surroundings.
Toothless is playful and intelligent with a puppy-like energy. When flying through the dark, he shoots purple flames called plasma blasts in all directions, which bounce off nearby surfaces to give him an accurate reading of his surroundings.
  — Dragonpedia stat card  
The attack of a Night Fury strikes fear into the heart of any Viking. Toothless fires shots of plasma with great accuracy from a long distance.
  Dragons: Rise of Berk  
Once a feared dragon, Toothless (the only known Night Fury), was the first to be trained. Years later, Toothless would become the Alpha of ALL Berkian dragons. Highly intelligent, fiercely loyal, and ferociously loving, Toothless is more like family than friend.
Once comfortable, Toothless is intensely playful, behaving more like a critter than a killer. His intelligence and empathy also appears to allow a degree of creativity, as shown when he mimicked Hiccup's drawing. He even got upset when his "art" was stepped on! A dry sense of humor, big heart, and a winning smile make Toothless and Hiccup mirror images of each other, and they are rarely out of each other's company.
  Dragons: Titan Uprising  


History Banner Default
Click here to view the biography of Toothless (Franchise).

Physical Appearance

Toothless is the only Night Fury seen thus far in the franchise, so his physical appearance is all that can be studied to learn about Night Fury anatomy. He has jet-black scales covering his whole body, his sides and wings having small light patches in a pattern similar to that of a manta ray, though in the second and third films these patches were removed, making his darker coloration more even. Toothless possesses two sets of wings (one main pair and one smaller pair near the base of his tail). The first pair allows him to do a vertical takeoff. Behind that is a set of smaller wings that aid his gliding. At the end of his tail, he used to have two tail fins that aided in steering and stability, but he is missing the left side of his tail fin, which he lost when Hiccup took Toothless down with his Mangler. This is later replaced by a mechanical fin that Hiccup constructs himself. As such, he is often seen donning the fin and its complementing saddle.

Toothless has a rather large scar on his right shoulder/neck which is around a foot in length with a width of about an inch. Toothless' eyes are bright green, sometimes acid or emerald-green. They are located very near the front of his face giving him excellent depth perception and reflexes in flight. He can narrow his pupils to slits when threatened or angry, similar to that of a cat. However, when he is docile or happy, his pupils dilate and become more dog-like. Toothless gets his name from his ability to retract his teeth.


Toothless eats fish

In How to Train Your Dragon 2, the spines on his head and forelegs are slightly longer. He also has three sets of extra plates growing on his lower jaw. He is also revealed to have a set of extended spines running along his back that aid him in making tight turns. Toothless didn't know about them, but they were revealed by Valka. But other than that he is identical to how he looked in the first film. Toothless is also a lot more playful than he was when he first met Hiccup. It is also revealed by Valka that Toothless is the same age as Hiccup. This may be another reason for how well the duo gets along.

While in Alpha mode, Toothless has blue markings on his back, fins, spines, and forehead, glowing because of the fire. His nostrils also glow, as well as the back.of his throat.

In "Night of the Hunters, Part 2", Toothless wore armor made by Hiccup and Snotlout from the Screaming Death's scales. Despite being heavy, Toothless was able to avoid the Dragon Hunter arrows.

In "Snow Way Out", Toothless had a lighter set of armor made from Gronckle Iron.

In the How to Train Your Dragon Live Spectacular, Toothless roughly has the same shape as his animated form, but his trunk is much thicker, presumably to house the animatronics mechanisms. He also has clear paw pads like a cat or dog on his feet. His coloration is also different — though mostly black, his underbelly is pale, and areas around his toes, mouth, and nostrils are fleshy pink.


Toothless 9999

Toothless with his best friend and buddy, Hiccup

Toothless is the most intelligent of all the dragons and seems to have a dry sense of humor, similar to Hiccup's. When Hiccup released him, he did not kill Hiccup. From here it was a little bit evident that he sensed goodness in Hiccup. He just had a few doubts due to which he did not let Hiccup near him for a few days.

He doesn't take kindly to being offended, nor anyone offending or endangering his human friend but is usually playful and even a little teasing when not threatened. He shows a sense of great curiosity, imitating Hiccup's actions and mannerisms when they initially encounter one another and can understand Hiccup's words and commands as well as agree with some of what he says. It is shown that he has become aware of Hiccup's relationship with Astrid, even seeming to briefly tease him about it, even though he did somewhat create it with the Romantic Flight scene in How to Train Your Dragon, which Toothless did to get Hiccup and Astrid together.


Toothless stalks like a cat

Toothless can display a bit of an attitude at times, reflecting his shared dry humor with Hiccup. He isn't easily intimidated, and his daring bravado can get him into trouble at times. He is also not above using violence to reach an end unlike Hiccup, but will usually refrain when told to do so.

Overall, the biggest attributes of Toothless' personality come through in his relationship with Hiccup. Equally protective and loyal, he never hesitates to risk his own life when Hiccup is put in danger and is more than affectionate when the time calls for it. His sense of devotion also shows itself when protecting Hiccup's allies and other friends. Toothless has shown to have a bit more of Hiccup's personality when battling Sleuther, seeing the fear in the other dragon's eyes, as it reminded him of when he had his first encounter with Hiccup.

Toothless, although he cannot speak, shows a lot of emotions through his facial expressions and body language. Toothless has even been shown to make a laughing sort of noise and often gives a few critical looks if he doesn't like the looks of something.  

Abilities and Skills

Intelligence and Communication Skills: As a Night Fury, Toothless' intelligence is unrivaled amongst the other dragons and often displays the attributes of an incredibly strategic thinker. Therefore, Toothless' intelligence is abnormally high and is much smarter than most other dragons. Toothless seems to be one of the few dragons who attempts to show creativity, as shown by his repeated attempts at drawing. He can comprehend silent commands via hand signals and motions and has also been taught by Hiccup to recognize his rider's Dragon Call as a summon. In "Stryke Out", he was able to trick a Razorwhip in the fights and understand how helpless the Triple Stryke was and decides to spare the dragon.

Speed and Agility: The Art of How to Train Your Dragon book notes that Toothless can fly over one hundred miles per hour and his design reflects his status as the 'Ferrari of dragons'. His aerial acrobatics, though requiring Hiccup's help to pull off, allow him to escape rather brutal confrontations with little difficulty. Even when not flying, Toothless can tear along the ground at terrific speeds and is one of the most agile dragons on land, shown being able to leap from trees, boulders, walls, etc.

In the Book of Dragons by Maggie Testa, it is stated that Night Furies can fly faster than 750 miles per hour (1207 kilometers per hour).

Strength: Toothless has shown to be tremendously strong for a dragon of his size, able to hold his own against other larger dragon species such as the Monstrous Nightmare, Whispering Death and Razorwhip. He can carry heavy objects, such as boulders and branches with his front legs alone, as well as adult humans such as Stoick, Gobber, Alvin, and Drago Bludvist. While carrying Hiccup on his back, he was also able to carry Hookfang with the extra weight of Snotlout with little struggle, as well as catch Barf and Belch when they fell off a cliff. When flying at full speed, he can knock down a dragon-proof ballista straight into the sea. As a Strike Class dragon, Toothless has a vice-like jaw that can exert great force.

Stamina and Endurance: Toothless can fly longer than any other dragon. But he was shown to be exhausted during the first search for the Skrill and carrying heavy objects or someone heavy like Stoick for a whole day. He has shown to be able to run long distance with no sign of being exhausted from the Cove to the Kill Ring. Toothless' bodily tissue is substantially harder than regular dragons, and he is also able to take a lot of damage in battle from Hookfang, fighting off the Berk warriors, and Stoick the Vast. He can take attacks from his rival, and still look untouched. After he was poisoned by the Triple Stryke he was still able to fight and defeat him.

Retractable Teeth: As a Night Fury, Toothless has the ability to retract his teeth when not using them. This unique trait can make him appear to be toothless, hence his name.

Enhanced Senses: Toothless appears to have an uncannily great sense of hearing, able to hear Hiccup's cries for help from the Cove even when Hiccup is in the arena as even possible can hear a small bug like a fly buzzing far in the distance. This good sense of hearing plays into his ability to use sonar, and he is seen using it in order to locate Dragon Island. He tracks Hiccup by his sense of smell but loses him when Hiccup takes to the air on the back of a Deadly Nadder. He also seems to have the ability of night vision though Hiccup did question when flying into the dark cave so possibly his vision isn't that strong in the dark. He is, however, able to echolocate like a bat; sending sounds off and listening for them to bounce off objects around him, giving him the ability to find his way around in the dark. However, the good sense of hearing can often be used against him though, making him relatively easy to control and influence from the call of a Red Death or Alpha Dragon.

Stealth and Camouflage: Toothless' black scales and extreme speed make him hard to notice, especially at night or in dark places. Toothless has the ability to move with silence even in pitch black conditions, and be one with darkness. This was demonstrated when confronting the Flightmare or when battling the Red Death in How to Train Your Dragon.

Fire: Toothless can produce several forms of fire. His signature attack is dive bombing and firing a precise and incredibly powerful blast, strong enough to destroy catapults and even knock down a Red Death in a single shot. He can also weaken his blasts enough to use them for non-violent purpose, and this level of control also allows him to ricochet his shots off of other surfaces like cliff faces.

Plasma Blast: Toothless is also able to shoot several forms of fire (See Also: Fire Types). His signature attack is dive bombing where he dives at great speed and then fires a precise and extremely explosive blast. It is strong enough to destroy a catapult and even knock down the Red Death while making the ground shake a little and sending a slight but noticeable shock-wave. He can also weaken his blasts enough to use them for non-violent purposes (like knocking people out of trees). This level of control also allows him to ricochet his shots off of other surfaces like cliff faces.

Saliva: Oddly, Toothless' saliva has an incredible amount of healing properties. However, this was only stated in "Defiant One" to heal Snotlout's tongue after eating some strange berries. It is possible Hiccup made this up, and the effect of the berries wore off. Hiccup also stated that Toothless' saliva doesn't wash out. It is also proven to be an effective adhesive, more than human saliva, as shown when Hiccup uses it to stick together parts of his map.

Echolocation: In "We Are Family, Part 1", it is revealed that Toothless has a hidden ability that Hiccup never known about it, being so long with Toothless he finds a strange ability that Toothless can use echolocation to guide himself and Hiccup out of the cave they were trapped in. Hiccup recalls later that "Toothless let out a weird sound that bounced back toward them, and was able to use that to get out". He also used this ability in "Frozen" when they are flying over the frozen sea looking for Johann's ship. He can then use it to see in clouds, which he fits when looking for the Skrill.

Swimming: Toothless is a great swimmer and has saved Hiccup from drowning several times in the process. He has also been seen sea skimming from one island to another.

Sea Skimming: A particular way of swimming that, according to Hiccup, "it's like flying, but not". To perform this, Toothless dives and jumps out of the water continuously. This ability doesn't require for Toothless to be ridden by anyone, and he can do this all by himself.

Synchronization: Thanks to the time they used the prosthetic tail fin, Toothless and Hiccup are able to fly together in perfect sync. Not only that, but they also understand each other the best out of all dragons and Riders, which was demonstrated several times.

"Flaps" on the Back: Toothless' hidden ability, that was unknown even to himself. Revealed by Valka, those leathery flaps are flat fins-like spikes, placed in "V" shape and extending from his back to the end of the tail. They gave him more maneuverability and control in flight, almost like a second tail. According to the How to Train Your Dragon 2 Film Commentary, this ability is common to dragons.

Dominance Display/"Titan Wing/Alpha": After being sufficiently enraged by Drago's Bewilderbeast, Toothless was able to "charge" himself in some way, it gives him more strength, stronger fire with seemingly no limit. This also gave him the more menacing look, with his back, nose, and mouth glowing blue color similar to his fire, probably because of amount and strength of this fire inside him. In this state, he challenged the Bewilderbeast. Dragons: Rise of Berk calls this glowing effect Toothless' Titan Wing stage, while School of Dragons calls it his "Alpha" look, indicating the franchise is unsure what to call this effect. It is also shown that Toothless, when in Alpha mode, can ignore the Alpha. Even when he is not in Alpha mode, Toothless only needs a blindfold over his eyes and side ears, and then he can ignore the Alpha. Toothless became the Alpha to all dragons at the end of How to Train Your Dragon 2. However, some dragons are able to disregard his dominance. Baby dragons do not show regard to anyone. Also, dragons in a panic or un-thinking frenzy will or are unable to listen. This is demonstrated in the graphic novel, Dragonvine, when a large group of frenzied Silkspanners fails to heed Toothless and catch him up in their webbing. It is also revealed that dragons that are drugged with Deathgripper venom are immune to his commands.

Cloaking: Toothless has the ability to channel lightning which enables him to seemingly disappear for a short period of time, similar to that of a Light Fury. The lightning that Toothless channel around his body will also electrocute anything in his vicinity.

Human Relationships

Hiccup Horrendous Haddock III

Hiccup-toothless-how-to-train-your-dragon-1 Main article: Hiccup and Toothless' Relationship

Please, you are my best friend, bud. My best friend. [src]
  — Hiccup trying to free Toothless from Drago's Bewilderbeast  

Toothless and Hiccup in flight

Toothless is Hiccup's best friend and closest companion. Both depend upon one another to a great degree. Toothless is unable to fly without Hiccup, and Hiccup's lack of strength and traditional Viking skills, along with his prosthetic leg, are compensated for by Toothless' strength, speed, and power. The two of them have become extremely close, and their bond of friendship has survived many harsh trials. Especially because of Toothless' maimed tail, their relationship is almost symbiotic. Toothless is able to fly in perfect synchronicity with Hiccup manipulating the tail perfectly mimicking Toothless' movements. Both Toothless and Hiccup have made serious mistakes while dealing with each other. Hiccup wouldn't heed Toothless' warnings in "The Terrible Twos", and Toothless would not allow Hiccup to aid him the battle with the Whispering Death in "What Flies Beneath" until Hiccup forced him into a position where he had to either save Hiccup or continue his vendetta. Even with these two extremely trying and difficult events, Toothless and Hiccup quickly reconcile, and together they overcome even the greatest challenges.

When Hiccup and Toothless first met, Hiccup prepared to cut out Toothless' heart but was unable to follow through. Ever since then, they were merely curious about each other, but eventually, this curiosity caused them to see each other's similarities. They bonded in the Cove, and Toothless would grow in his loyalty to Hiccup as he and the boy became more and more familiar with each other. Hiccup would soon allow Toothless to fly again, and in doing so he would give the dragon back the thing he held most dear. Toothless and Hiccup often fly together. They have spent hours in practice, and both seem perfectly happy to stay airborne as long as possible. Gobber remarks how hard it is to get Hiccup off of Toothless, and he holds a fair point.


Toothless dives to save Hiccup

The boy and dragon clearly like nothing more than flying through the rushing air as one. By the time of Snoggletog, Toothless is actually far more interested in his friendship with Hiccup than his own freedom. He is given the ability to fly on his own, but he is so determined to never leave Hiccup that he destroys his new auto-tail. In essence, he very much wants to need Hiccup.

Toothless is fully willing to risk his own life for the sake of his friend. He attacks Hookfang and fends off many Vikings that tries to attack him. Toothless would eventually dive into the exploding body of the Red Death in order to save Hiccup's life. In the events of "When Lightning Strikes", after Hiccup is hit by a lightning bolt, Toothless' strong bond with Hiccup is displayed yet again when he breaks free from a restraint that he couldn't free himself from and dives into the water after Hiccup. The two of them are always together and have become practically inseparable. Toothless follows Hiccup everywhere and enjoys the company of Hiccup even in the most mundane and normal daily activities. Toothless seems to be perfectly happy with Hiccup even though he has no other Night Furies. In "The Zippleback Experience", Toothless is shown to be able to sense when Hiccup is in danger, as he intensely looked out to the sea when Hiccup was captured by the Dragon Hunters, despite not being present when it happened.

Hiccup and Toothless with their heads touching

A sweet moment

Astrid notes that Toothless does not seem to need anyone besides Hiccup to make him happy, and this is very often shown to be true. In "The Night and the Fury", Tuffnut refers to Hiccup as Toothless' "other half". Toothless' position as Hiccup's first and best friend is never questioned, with Hiccup referring to him as the best friend he has ever had. The closest thing to compare Toothless and Hiccup's friendship too is like brothers.

Even after Toothless was briefly brainwashed by Drago's Bewilderbeast to kill Stoick, after Hiccup initially yelled at Toothless out of grief and pain, he soon calmed down, breaking through the Alpha's control of his friend by assuring Toothless that he didn't blame him for what had happened. Toothless in return challenged the massive Bewilderbeast solely through his desire to protect Hiccup, showing that their bond is unbreakable even in the toughest of trials.

One year after they both became leaders of their community, Hiccup and Toothless still take time to play together despite their duties while also being dragon rescuers. Hiccup relies a lot on Toothless for self-confidence. However, Toothless becomes distracted after meeting and falling in love with a white dragon (dubbed a Light Fury by Astrid). Hiccup built a new automatic tail fin for Toothless who, this time, is really happy. Yet, when leaving, he can't help but stop and look back at Hiccup with a sad look, showing he doesn't want to abandon his best friend. Later, the Berkians think Toothless will most likely not be coming back, which hurts and scares Hiccup. But, when the dragons of the Hidden World attack Hiccup and Astrid, Toothless doesn't hesitate to leave his mate to save them and bring Hiccup safe back to New Berk. When the Light Fury shows up on New Berk, Toothless convinces her to follow him toward Hiccup. This shows that perhaps Toothless never meant to leave permanently.

Sadly, Toothless and Hiccup both come to understand the time has come to separate, although none of them want to say goodbye as shown when Toothless hugs Hiccup. The human world is just too dangerous for dragons and Toothless, as the Alpha, belongs in the Hidden World. Toothless is the last dragon to leave and not without a last sad look at Hiccup.

About a decade later, Hiccup sees Toothless again. However, Toothless is now wild again and doesn't recognize Hiccup until he sniffs the man's hand. He then immediately jumps on Hiccup and licks him, extremely happy and even let Hiccup's children pet him. Toothless and Hiccup then take one last ride together in the sky with their respective families. This shows that despite their separation, their friendship is still alive and well.

Stoick the Vast

Thank you for saving my son. [src]
  — Stoick, to Toothless who has brought Hiccup back alive  

Stoick thanks Toothless for saving Hiccup

Toothless and Stoick got off to a really bad start from the moment they first meet. Stoick charges Toothless, seeing him as the ultimate threat to the island and the very "Unholy Offspring of Lightning and Death itself". Initially seeing Stoick as the greatest threat when Hiccup needs to be protected, Stoick struggles, but even with his massive strength, he is unable to keep Toothless from pinning him to the ground.

Toothless prepares to kill Stoick with a fire blast, but Hiccup screams "NO!" in utter desperation. After that, he chains Toothless in a cruel yoke to find the Nest, after discovers that Toothless can be used to find Dragon Island. The dragon is surprised when Stoick jumps into the water to free him upon seeing that Hiccup was right about dragons. When Stoick frees him, Toothless grabs Stoick and carries him to the surface rather than leaving the chief to come back on his own. After the battle of the Red Death comes to a close, Stoick believes Hiccup to be dead. He apologizes to Toothless in painful grief, but Toothless reveals that Hiccup is still alive. Stoick deeply thanks the dragon for saving his son, and the two of them grow to have great respect for one another.

During the TV series, Toothless continues to show respect for Stoick due to his status as the chief but occasionally comes into conflict with his interests when the Viking's stubborn nature comes into play. Rather than face him outright, Toothless would rather avoid confrontation altogether even at his the cost of his own discomfort, such as in "How to Pick Your Dragon". Stoick stands up for Toothless without hesitation in "When Lightning Strikes", Stoick's and Toothless' friendship is fairly strong, and it is made even stronger by their mutual love for Hiccup. In "Imperfect Harmony", Stoick entrusted Toothless to take care of Hiccup while they were out exploring new lands

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A concerned, confused Toothless, nudging Stoick's hand

In How to Train Your Dragon 2, their relationship is definitely stronger as Toothless appears to agree with Stoick's decision not to go after Drago in the beginning. Upon seeing how happy the chief is when reunited with Valka, he tries his best to perform actions of encouragement for the whole family. Near the climax, Stoick is killed by Toothless' plasma blast when Drago's Bewilderbeast takes control of him. Upon temporarily being freed it, Toothless comes to his senses and approaches Stoick's body, not knowing what he did until Hiccup forces him away. Realizing his action, Toothless is saddened for what he has done but redeems himself for this incident by challenging and defeating the Bewilderbeast for Berk near the end.

In Dragonvine, Toothless is shown to still bear some guilt over Stoick's death.

Astrid Hofferson

[...] I'll need to fly Toothless since you'll be too busy. [src]
  — Astrid's reaction to Hiccup who will soon become the new chief of Berk  

Toothless meets Astrid

Toothless' first encounter with Astrid is rather unfavorable. He sees her being aggressive towards Hiccup and decides she is a threat. He leaps towards her and prepares to land on her with mouth agape. Hiccup jumps in and pushes Astrid to safety and disarms her at the same time. He tries to calm both parties down but they still don't take too kindly to one another.

When Astrid takes off to tell on Hiccup and Toothless, they decide to kidnap her. Hiccup eventually manages to convince her to ride on Toothless with him, claiming that there is nothing to be afraid of. Toothless, however, has different intentions in mind. He leaps into the air and pulls off an array of dangerous aerial maneuvers until Astrid submits and apologizes. Toothless then smooth out the flight and gives Astrid an wonderful, beautiful view of Berk from the air. She is amazed by the splendor of the scene and admits that flying is amazing, adding on that Toothless is amazing.

From that moment on, she helps Hiccup try and keep Toothless concealed. Toothless later saves her from being eaten by the Red Death, and upon doing so, gives her a big toothless smile. After the demise of the Red Death, Astrid is incredibly relieved to see that Toothless managed to save Hiccup.

Throughout Race to the Edge, Astrid forms a stronger bond with Toothless. She rides him when Hiccup and Snotlout are trapped by the Sandbuster. Once Astrid and Hiccup are in a relationship (after the events of “Blindsided”, Toothless forms a closer bond with Astrid, and it can notably be seen that Stormfly is his best dragon friend.

In How to Train Your Dragon 2, Toothless greets Astrid and Stormfly with a big gummy smile which earns him an affectionate scratch from Astrid before he wanders off to play with Stormfly. During his first encounter with Eret, Astrid places a calming hand on Toothless as he snarls at the Dragon Trappers for capturing Stormfly. Astrid's relationship with Toothless is also shown to have a playful side, especially during Dragon Racing.

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Toothless and Astrid in Dragons: Race to the Edge

Toothless seems to have a good grasp on Hiccup's feelings for Astrid, and he even teases him about it, most notably in the first film and later on in "Shell Shocked, Part 1". In "Team Astrid", he was particularly encouraging Hiccup when he wanted to stay the night with Astrid at the Academy. He was also seen worrying about her in "Buffalord Soldier" and was quite displeased when Viggo showed up.

He and Astrid also seem to share a common worry for Hiccup's well being and understand one another's importance in his life. In "Out of the Frying Pan", Toothless reacted to Astrid being in danger with immediate concern and straight away attempted to save her life by himself. In "Blindsided", Astrid felt that Stormfly didn't want her and went to Toothless instead, and Toothless didn't seem to mind it in the least until Hiccup intervened, defending Stormfly's actions.

In "Sandbusted" Toothless sought Astrid out when Hiccup was in danger. It was his first solo flight with Astrid.


Oh, he's beautiful! Incredible! He might very well be the last of his kind. And look, he's your age! No wonder you get along so well! [src]
  — Valka during her 'inspection' of Toothless  
Toothless plays with Valka

Toothless is initially distrusting of Valka until she shows her ability to communicate with dragons like her son. He later becomes as docile around her as he does with Hiccup, most likely due to the family connection and her years worth of dragon taming experience. When they first meet, Toothless seems to enjoy Valka's company a great deal and tries to encourage her to come back to Berk so they can all be a big family.

Gobber the Belch

Save travels, old friend

Toothless and Gobber seem to be on friendly terms. In "The Terrible Twos" Gobber seems to understand Toothless and vice-versa, but doesn't like Gobber's comments that involve Vikings before dragons.

Snotlout Jorgenson

You know what, Toothless? We make a pretty good team. I might not give you back... Kidding! [src]
  — Snotlout  
Out of the Frying Pan23

Like Hiccup, Toothless shows some resentment towards Snotlout. In "Defiant One", Toothless turned to Snotlout to help rescue Hiccup from the Outcasts. While the two did work well together, Toothless growled at Snotlout when he said he might not give him back to Hiccup. Toothless occasionally blasts Snotlout, usually when annoyed with him or helping him out when he's stuck. Knowing he needed a rider, he wasn't hesitant to put Snotlout on his back so he could rescue Hiccup from the lava of the Defenders' volcano.

Fishlegs Ingerman

All right, Toothless. Let's just not break any speed records, okay? Just give me the "night" without the "fury". [src]
  — Fishlegs rides Toothless for the first time  
Tumblr o1z5cnsPFh1u1x8wgo5 1280

Toothless appears to be somewhat more gentle around Fishlegs than the other Riders. When Hiccup got attached to Meatlug, who began attracting metal to her body, Toothless showed no hesitation to let Fishlegs ride him, and didn't do any "scary" maneuvers because he knew Fishlegs wouldn't be comfortable with them.

Ruffnut and Tuffnut Thorston

Hey, T, how you been? [src]
  — Tuffnut, attempting to ride Toothless in order to save Barf and Belch  
DD S3 RttE E19 0516

Like everybody else, Toothless is showed to be annoyed with the Twins' antics. In "The Zippleback Experience", he was a bit disgusted at the idea of the Twins riding him, but despite this, he allowed them to fly with him in order to save Hiccup. However, it was quickly proven that the Twins were not good at flying Toothless when they collided with Barf and Belch.

Still, Toothless is shown to care for the Twins' safety, for he was the first to rush and save Tuffnut, when he almost fell off a cliff in "Bad Moon Rising". He also never wants to have the Twins harm each other, which is shown when he smacks both of them with his tail as they charge at one another in "A Gruff Separation".

Eret, Son of Eret

Eret: "I'm Eret. Son of Eret. Finest dragon trapper alive. After all, it's not just anyone who can capture a Night Fury."
Hiccup: "And this is Toothless. He says we're going. Now."
Eret: "Heh. They all say that."[src]
  — Toothless and Eret's first meeting  
Catching up with mother

Toothless was initially angry at Eret for capturing Stormfly but quickly forgave him and actively tried to help Hiccup persuade Eret over to their side.

Toothless was happy to see Eret become a Dragon Rider and gave him a gummy smile when he and Hiccup caught up with Eret and Stormfly during the battle of the Bewilderbeasts.


Actually, Hiccup took me on Toothless. It was beautiful. [src]
  — Heather to Snotlout  

Toothless was comfortable enough to let her ride him, along with Hiccup. While his reaction to Heather's betrayal was not seen, he seemed to have forgiven her, as he let her pet him goodbye. When Dagur offered Heather to join him, Toothless protected her from the Berserker chief.

Toothless was happy to see Heather and Windshear again in "To Heather or Not to Heather".


You do have a connection with him, Hiccup Haddock. I do not understand it, but I cannot deny it. [src]
  — Mala to Hiccup about his connection with Toothless  
Mala 049

Toothless warmed up to Queen Mala instantly, much of the same nature as Valka. He was even willing to offer Mala a ride with him, something that he didn't do for anyone else. When the Great Protector's egg needed to be delivered inside the volcano, Mala chose Toothless for the mission, knowing that the Night Fury is faster and more maneuverable than other dragons. She often scratches him under the chin when the Dragon Riders visit Caldera Cay, showing that she has a closer bond with him than with the Riders' other dragons.

Dragon Relationships



Toothless and Stormfly say farewell during the Dragon Migration

Throughout the franchise, Toothless and Stormfly share a very close friendship that rivals their riders'. They really seem to enjoy each other's company and can often be seen interacting on friendly terms. Sometimes Astrid's competitive nature can be seen in Stormfly, and that means that she and Toothless do occasionally get competitive.

In Gift of the Night Fury, Toothless is seen calling Stormfly before she leaves for the migration. Stormfly beckons Toothless to fly away with her to Dragon Island, but because of his disability, being unable to fly without a rider, Toothless could not lift off. After they exchanged warbles, squawks, and roars, Toothless watched her go.

On Dragons: Race to the Edge, they are usually seen chasing each other and playing in the background. Toothless' friendship with Stormfly is aided significantly by the fact that Stormfly's rider is Hiccup's closest human friend and girlfriend. As Hiccup and Astrid grow closer, so do their dragons. In Fishlegs' short imagined story of how Berk would be without the Riders leaving to the Edge in "Darkest Night", Stormfly and Toothless are seen together. However, Stormfly hears the attack while Toothless is still asleep.

When Toothless breaks free from the Alpha's control and calls other dragons to aid him, Stormfly is the first dragon shown to return to herself and join Toothless' side as he makes his stand. After the Bewilderbeast's defeat, Stormfly acknowledges Toothless as the new Alpha Dragon by bowing down to him.


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Toothless and Hookfang together

Toothless and Hookfang bare a completely different relationship to that of their riders. However, at times Hookfang has seen to be pretty competitive with Toothless. They both share a mutual respect for each other. As far as can be guessed, Hookfang and Toothless met each other for the first time in the Dragon Killing Arena. Hookfang was attempting to kill Hiccup, and Toothless blasted into the arena in order to save his friend. Hookfang and Toothless engage in a short yet brutal fight. Hookfang backs down but shoots Toothless an odd look of contempt.

Toothless and Hookfang tolerate each other for most of the time, though they rarely have any friendly interaction. Occasionally they will get into fights, and when Hookfang went on a rampage, Toothless was quick to leap in and attack him. They share a sort of rivalry, and this is most clearly displayed in the Thawfest games. The dragons openly growl at one another before the games begin. Toothless and Hookfang do not hate each other, but there is very little evidence that either of them has any affection for one another.

In How to Train Your Dragon 2, Hookfang acknowledged Toothless as the new Alpha Dragon by bowing down to him.



Toothless playing with Meatlug

Toothless has shown to be close friends with Meatlug as he shows to concern when she feels depressed as Fishlegs was neglecting her over wanting to win the Terrible Terror training competition. Meatlug also seems to care for Toothless as she was willing to help him out in the process of which Hiccup and Fishlegs were trying to cure Toothless of the eel effect. They often play with each other by rolling around the place, as seen in "Living on the Edge".

In How to Train Your Dragon 2, Meatlug acknowledged Toothless as the new Alpha Dragon by bowing down to him.

Barf and Belch


Toothless comforting Barf and Belch

Barf and Belch and Toothless are usually good with each other, although Toothless looked angry and annoyed when they crashed him and Hiccup from the sky in "The Zippleback Experience". Toothless usually will grab on their tails when they need to be stopped if they cause problems such as when they weren't with their owners and went crazy because the Twins were having a fight or when they were affected by the dragon root. When Tuffnut and Ruffnut head into the lair of a Titan Wing Zippleback in "A Gruff Separation", Toothless comforts the anxious Barf and Belch by nuzzling them.

In How to Train Your Dragon 2, Barf and Belch acknowledged Toothless as the new Alpha Dragon by bowing down to him.


Toothless did try to fight Thornado before he was trained by Stoick. They later have a better relationship, learning to work together in "Live and Let Fly", as they combined their shots to defeat Alvin's boat. Toothless understood that Thornado had to stay on Dragon Island to look over the baby Thunderdrums, Bing, Bam, and Boom (which Tuffnut originally called Darren and Lloyd), and the Thunderdrum roared a farewell to his friend.

His Nemesis

So Toothless has an arch-enemy. Kind of like you and me. [src]
  — Snotlout to Hiccup  

Toothless fighting his rival

Toothless' arch rival is a Whispering Death from his past. He and this dragon have some sort of serious history, and they both are willing to fight to the death over the grudge. What the events were that started the feud are unsure, but the Whispering Death has a large bite mark from his previous battles with Toothless. This Whispering Death shows up in Berk looking for Toothless.

The Whispering Death soon discovers that his old rival is unable to fly, and he uses that to his advantage. The Whispering Death refuses to be trained by Hiccup and nearly eats the boy. Toothless is nearly killed when the Whispering Death attempts to blast him off of a cliff. Hiccup arrives just in time, and he and Toothless must work together to defeat this powerful enemy. Toothless had originally wanted to settle the score on his own, but Hiccup eventually convinced him to accept help.

Whatever started the grudge was certainly serious. Toothless is so set on seeing the fight through that he actually fires a plasma bolt in front of Hiccup to get the boy to stop following him. Hiccup is deeply saddened by this, and Toothless realizes this, but he is still willing to hurt Hiccup's feelings for the sake of dealing with this past rivalry.

Toothless cares for Hiccup deeply, so the fact that he would risk harming their friendship for the sake of revenge gives a tiny glimpse at the seriousness of his animosity towards this Whispering Death. In the end, Toothless spares the Whispering Death after defeating him. The Whispering Death then quickly retreats, and Hiccup is proud of Toothless for sparing his foe that had only moments before nearly killed them both. It is possible that they are no longer foes and consider the matter to be closed.

Toothless' experience with this dragon made him more aggressive towards some other Whispering Deaths, although, with some individuals, such as the Screaming Death's mother, Toothless has retained his aggression towards her.


True to his breed, Torch has a bit of a hot head. This can be seen easily in his mostly-playful rivalry with Toothless.
  Dragons: Titan Uprising  

From the moment Torch is discovered, Toothless instinctively didn't trust the youngling but knew the young Typhoomerang's mother was nearby and thus didn't want to risk angering her. Hiccup, however, ignored his warnings and took him to Berk anyway. From that moment, Torch began to irritate Toothless without mercy. He ate all of Toothless' fish, stole all of Hiccup's attention and took his bed allowing Toothless to become jealous of the attention the dragon got from Hiccup instead of him. Torch seems to be little brother that Toothless never wanted.

When the two meet again, they're still not on the best of terms but are no longer as aggressive to one another.

The Screaming Death

Dragons Defenders of Berk Season 2 Episode 20 Cast Out, Part II Watch cartoons online, Watch anime online, English dub anime1377

Screaming Death confronting Hiccup and Toothless

Toothless met a new enemy: the Screaming Death. This large dragon goes after him and Hiccup more than the other dragons, most likely due to Toothless attacking the Screaming Death more often. Hiccup and Toothless were able to lure the albino dragon into colliding with a sea stack, and injuring its wing. The Screaming Death obviously remembered this when they met again, as Hiccup and Toothless were its main targets other than sinking the islands. Toothless is happy to see the Screaming Death reunite with its mother. Though Toothless was a bit surprised that the Screaming Death had forgotten who he and Hiccup were three years later, and they became rivals again.


Fanghook and Toothless

Toothless has shown to dislike Fanghook as he was wild dragon and roar at Fanghook when failing to shot accurate at the target when almost blasting the Riders that were around. Later Toothless was shown to be a bit thankful being saved by Fanghook from the trap.

Like other Riders, Toothless had shown to be very annoyed with Fanghook as he was standing on his back as Fanghook was being playful with him.


Skullcrusher gallery3

Toothless playing with Skullcrusher

Toothless was shown to dislike Skullcrusher at first because thinking it was a very wild dragon that was attacking the Edge. Even though he went searching for this dragon seeming it was attacking his family, he was told by Hiccup to shoot at the Rumblehorn until Stoick stopped the attack, realizing that the wild dragon was trying to save everyone by making them flee from the Edge before the huge tidal wave hit. When Toothless came on good terms with this new member of the family, they were sometimes seen running around together.

In How to Train Your Dragon 2, Skullcrusher acknowledged Toothless as the new Alpha Dragon by bowing down to him.



Unlike Toothless' playful personality, Cloudjumper is a more serious counterpart. The two appear to become friends after learning about the relationship between their riders and often observe the behaviors of each other during flights. Toothless even act smug towards Cloudjumper when Hiccup reveals that he can fly on his own, unlike Valka. Toothless attempts to get Cloudjumper to play with him multiple times, only able to get a reaction of the larger dragon when he has snow dumped on him. After defeating Drago's Bewilderbeast, Cloudjumper is the first to bow down to Toothless, showing his respects. Cloudjumper seems to have a "caring older brother" attitude toward Toothless, and when he bows at the end before Toothless he does so with a hint of being proud of Toothless, almost in a fatherly way.


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Windshear appears to be comfortable around Toothless, as the two were seen nuzzling. When Toothless, Stormfly, and Windshear met up, the three were seen playing together. Toothless happily greeted Windshear when she and Heather returned to Dragon's Edge, but the Razorwhip growled at him, much to his surprise as she became a bit like Heather trying to stay her distance from others. She did seem to settle down a bit later on, but she attacked Toothless again during a training flight. Once Windshear finally accepted the others, the two got along again. Toothless even regurgitated a fish for her, which she accepted.


In "Family on the Edge", Toothless has shown that he was helping this dragon to be trained by his new owner Dagur. Toothless even sees that Shattermaster was willing to give up his life to help his owner to defeat the Dragon Hunters.


TS 64

In "Stryke Out", Toothless was forced to fight a wild Triple Stryke in the Dragon Fight Arena. As they fight it occurs to Toothless that he was fighting for his life. Toothless manages to get the upper hand during the fight, and as Toothless was going for the kill, he saw Sleuther's eyes close and it reminded him of his past, as Hiccup had done the same in sparing his life. As he manages to show the Triple Stryke there's no need to kill others for survival, Toothless manages to train the wild dragon. The Triple Stryke even flies next to Toothless, thinking him a trustworthy friend, and mimics his grin, with tongue out and all.

Unfortunately, by the time of "Blindsided", Sleuther has become a wild dragon once more on the Edge, as he still has problems with humans. Even Toothless wasn't able to calm his friend as the Triple Stryke even tried to attack him. This, however, could be caused by the fact that his natural instincts came back after living in the wild with many dragons and he must hunt for food as he used to be fed in captivity for a long time.

Unnamed Light Fury

The Hidden World TV Spot 46

Toothless unknowingly first sensed the presence of the Light Fury during a raiding mission, but he was unable to see her due to her camouflaged in the mist. He eventually sees her for the first time on Berk and the two dragons immediately form a mutual attraction. When the Light Fury flies away, Toothless tries to follow her but unable to do so when she vanishes into the night.

After the encounter, Toothless starts to become lovesick and is determined to find the Light Fury again, and he eventually does when he and all of the Berkians are flying away from Berk. Toothless becomes so distracted by the Light Fury's beauty that he almost forgot that she tries to toss Hiccup into the ocean and flies down to save his rider. Toothless becomes disappointed again when she disappears again.

Not long after the Berkians settle on New Berk, Toothless meets the Light Fury again as she lures him away from the camp and into a nearby beach. She tries to initiate a mating dance, but he is unable to respond properly. He eventually wins her heart when he uses a broken branch to draw her face on the sand. The Light Fury tries to make Toothless follow her, but the latter is unable to do so due to his missing tail fin.

Hiccup eventually makes Toothless an automatic tail fin that enables him to fly on his own and find the Light Fury. The two dragons are reunited as they soar into a storm together. The Light Fury shows Toothless how she is able to cloak her entire body by flying into a plasma explosion and asks him to do the same. After a couple of failed attempts, Toothless unknowingly channels lightning into his body to amplify his plasma blast, which allows him to become invisible. As the two dragons ascend above the storm, Toothless licks the Light Fury on her head, which prompts her to swoon over him. They then fly together towards the Hidden World.

As the dragons of the Hidden World accept Toothless as their Alpha, Toothless and the Light Fury dance together to officially become mates. The tender moment is inadvertently interrupted when Toothless realizes that Hiccup and Astrid are being chased by the other dragons, forcing him to leave his mate behind.

Toothless is initially saddened that he has to leave the Light Fury behind, but becomes ecstatic when he sees that she has followed them back to New Berk. The reunion is cut short when Grimmel captures the two of them and forces all of Berk's dragons to surrender themselves to the Warlords.

When Grimmel uses Deathgripper venom to enslave the Light Fury, Toothless and Hiccup chases after them but they are unwilling to beat the hunter while he is controlling her. Toothless then uses his cloaking technique to fly around Grimmel as Hiccup glides off to rescue the Light Fury. Grimmel manages to sedate Toothless with an arrow filled with Deathgripper venom and Hiccup tells the Light Fury to save her mate before falling down with Grimmel. The Light Fury successfully rescues Toothless before coming back to save Hiccup.

After Grimmel is defeated, Toothless and the Light Fury reunite as they lead all of Berk's dragons to the Hidden World so that their human friends will truly be safe.

Night Light hatchlings

9 years after the dragons left New Berk, Toothless and his mate have three offspring,
Hiccup, Nuffink Toothless, and Nightlights

each inherit the mixed characteristics of their parents, Toothless is shown to be very caring towards his offspring, as he prepares to defend them upon seeing humans for the first time in a decade.

Enemies, Old and New

Before meeting Hiccup, Toothless viewed all humans as enemies. It took some time before he opened up to others. Even after the events of the first film, Toothless still has some humans that were his enemies.

Current Enemies


Toothless has always held an animosity towards Savage, since the latter always tried to endanger his and Hiccup’s life. In "Midnight Scrum" Toothless growls at Savage so that the bounty hunter could reveal where Hiccup is being taken to. Not long after, Savage proceeds to insult Hiccup for being the one who brings everyone into the mess. Stoick attempted to kill Savage out of anger, but Toothless stopped his rider’s father from doing so, knowing that Savage’s death would not bring Hiccup back or make the situation any better. Their antagonism towards each other continued when Savage started a coup against Dagur in "Something Rotten on Berserker Island".

Drago Bludvist

Toothless has a deep hatred for Drago, especially after witnessing the atrocities of his trappers. After Drago uses Toothless under the Bewilderbeast's control to attack Hiccup and ultimately kills Stoick instead, Toothless shows no mercy in throwing Drago to the ground when he is made free and ultimately fights back against the madman and his Bewilderbeast.

Former Enemies

Alvin the Treacherous

Toothless didn't hold back when facing the Outcast leader, almost threatening to kill him during a charger in the events of "We Are Family, Part 2". In "Cast Out, Part 2", Toothless is not thrilled about having Alvin join him and Hiccup to save Stoick, but did seem pleased as he and Hiccup watched Stoick and Alvin make up.


Toothless shares a great dislike for Mildew, who absolutely hated dragons. In "How to Start a Dragon Academy", Toothless growls at the old man when he was making fun of Hiccup for thinking dragons could be trained. Though like Alvin, Toothless shows a bit more of a trust in Mildew after he is freed from Dagur's cage trap by him, showing that he begins to trust the old man as an ally.

Dagur the Deranged


Toothless shows more of his ferocious side whenever he sees Dagur since he is obsessed with killing Toothless as well as many other Dragons. Toothless began to slowly open up to Dagur in "Enemy of My Enemy" when the Berserker is trying to change. Like Hiccup, he did not trust him, but Dagur helped create a cure for the dragon root arrow Toothless had been shot with. He also allowed Dagur to operate his tail so the two could save Hiccup from the Dragon Hunters. He let Dagur ride him again for fun in "Family on the Edge" as proof that Toothless is believing that Dagur is becoming a better man, and was happy to have Dagur ride on him. Toothless was able to encourage Hiccup to trust Dagur since Toothless was learning to do the same with the former villain.

Ryker Grimborn


Toothless dislikes Ryker and their fellow Dragon Hunters ever since he saw the dragon skeletons aboard The Reaper.

In "Midnight Scrum", when Ryker captured Hiccup, Toothless almost killed him, but was stopped by Stoick.

Viggo Grimborn


Toothless hated Viggo since he first met him in "Maces and Talons, Part 2". In "Last Auction Heroes", after Viggo almost sold Toothless at his auction, Toothless wanted to fight him instead of getting Berk's gold.

In "Shell Shocked, Part 2", When Viggo allied himself with the Dragon Riders in order to defeat his brother, Toothless didn't trust him. However, he let Viggo ride him. When Viggo ordered Toothless to stop, he just growled but obeyed when Hiccup told him the same.

In "Triple Cross ", Viggo reveals that red oleander is harmless to dragons and that he never had any intention of harming Toothless. It is evident that both Hiccup and Toothless forgive Viggo by the end of the episode.


Following the apparent demise of Viggo Grimborn, Krogan took over the Dragon Hunters. He is introduced in the Dragons: Race to the Edge episode, "Last Auction Heroes" and appears prominently in the final two seasons of Dragons: Race to the Edge. In "King of Dragons, Part 2", Toothless confronted Krogan when he tried to escape with the Bewilderbeast egg and quickly defeated him with a single tail swipe to the face. It is later revealed that Krogan was employed by Drago Bludvist to retrieve a Bewilderbeast and was executed when he failed in his task.


Johann is a seafaring trader who visits Berk from time to time, offering goods to barter for. However, he is later revealed to be allied with the Dragon Hunters, having secretly been working against the Dragon Riders by pretending to be their ally for years. When Johann revealed his true intentions, Toothless did not hesitate in turning against him.

In the episode "King of Dragons, Part 2", Johann attempted to kill Hiccup as the latter hung onto a cliff, only for latter to be saved when Toothless knocked Johann away with a plasma blast. In the end, the Berserker Bewilderbeast freezes and kills him while stopping him from killing Hiccup with a spear.

Drago's Bewilderbeast

Like other dragons, Toothless fell victim of Drago's Bewilderbeast's hypnotic abilities and was forced to attack Hiccup, but ultimately killed Stoick instead. When broken free and the Bewilderbeast attacked Hiccup directly, Toothless used his body to shield him from the icy blast. Toothless then challenged the Alpha and defeated him by having the other dragons join him before breaking off his left horn, which leads to the Night Fury becoming the new Alpha.

When Toothless becomes the Alpha of the Hidden World, Drago's Bewilderbeast is among the countless dragons who cheer for him, showing that he has accepted Toothless as the one true Alpha Dragon.

Grimmel the Grisly

Grimmel is a dragon hunter who specializes in hunting Night Furies. He is the main reason why Toothless is the last known member of his kind, and Grimmel plans on finishing the job by killing Toothless. Grimmel almost succeeds in slaying Toothless, but Hiccup and the Light Fury manages to intervene, which results in Grimmel’s death.

Temporary Riders

Astrid Hofferson

In "Sandbusted", Astrid rode on Toothless to help Hiccup, Snotlout, and Amos escape from the wild Sandbuster.

Stoick the Vast

Stoick rode Toothless when the chief began his training in "How to Pick Your Dragon". While Stoick enjoyed using Toothless for his chieftain responsibilities, the Night Fury did not. He even tried to hide from Stoick at one point. In "Midnight Scrum", however, Toothless allowed Stoick to ride him again when Hiccup was abducted continuously by a series of bounty hunters, as well as when they fly back to Berk afterwards.

Fishlegs Ingerman

In "The Iron Gronckle", Toothless allowed Fishlegs ride him when the two of them were trying to catch a magnetic Meatlug and Hiccup, who was attached to her.

Snotlout Jorgenson

In "Defiant One", Snotlout rode Toothless when Hiccup was captured by the Outcasts and attempted to ride him again after thinking that Hookfang has left him. In "Out of the Frying Pan", Toothless then had Snotlout ride him in order to rescue Astrid and Throk who got trapped in the volcano of Caldera Cay, but the spewing lava proved too much for them.

Ruffnut and Tuffnut Thorston

In "The Zippleback Experience", when Hiccup was captured by the Dragon Hunters with Barf and Belch trying to rescue him, Ruffnut and Tuffnut rode Toothless to help them, much to the Night Fury's dismay.

Dagur the Deranged

In "Cast Out, Part 2", Dagur first tried to ride Toothless by force, but the Night Fury managed to buck him off. In "Enemy of My Enemy", Toothless finally let Dagur ride him so they could save Hiccup from the Hunters. Dagur rode him again to pass the time while Hiccup was getting a new leg, although he bucked him off when Dagur grabbed the base of his wing.

Drago Bludvist

When Toothless fell under the control of Drago's Bewilderbeast, Drago used him as his method of transport to Berk. Once Toothless broke free, he threw Drago off his back.

From Book to Film

Setting Toothless up as a threatening presence gave us that vital sense of tension for Hiccup's story. [src]
  — Chris Sanders  

Unlike his book incarnation, the film version of Toothless being a Night Fury is an original concept unique to the series. The Terrible Terrors were initially designed to be a more faithful take on Toothless' original incarnation, but as time went on in development, it was decided that Hiccup's dragon should have more presence and be able to stand toe-to-toe with his future tamer and become a lifelong friend rather than pairing the scrawny Viking with an equally scrawny dragon.

Game Statistics

Dragons: Titan Uprising

School of Dragons



  • While Night Furies are nocturnal, Toothless is shown mostly active during the day, likely due to his relationship with the human characters and adapted to their schedules.
    • In the first film, it is noted that Toothless attacked with the cover of night, likely so that he could camouflage.
  • Toothless' pupils change shape depending on his mood: when he is frightened, angry, or aggressive they narrow into thin, lizard-like slits, but when he is being friendly and happy they widen into round "puppy-dog" eyes.
    • When Toothless is mind-controlled by Drago's Bewilderbeast, his pupils narrow thinner than ever before, giving him the appearance of a terrifying, mindless killer. As soon as he breaks free, his pupils widen bigger than ever before, when he shows fear, sadness, and guilt over the death of Stoick and Hiccup's rejection of him.
    • This is similar to another DreamWorks character, Puss in Boots from Shrek, whose pupils widen when he is trying to look 'cute'.
  • Hiccup has stated that he has never seen another Night Fury aside from Toothless while Eret believed that Night Furies were extinct and Valka notes that Toothless very well could be the last of his kind. This is proven when Grimmel the Grisly claims to have hunted every last Night Fury except for Toothless.
  • The similarities of Toothless to Disney's Stitch (of Lilo & Stitch) are very prevalent and isn't just a coincidence: The creative team behind the film versions of How to Train Your Dragon (Chris Sanders and Dean DeBlois) are the same duo behind Lilo & Stitch.
  • Toothless and Hiccup share many traits that make them symbolically equal. The most prevalent of them is the fact they are both missing a left part of their body that is used for movement and that they are the same age.
    • To further strengthen the connection, Hiccup's prosthetic leg operates Toothless' prosthetic fin, uniting both dragon and rider into a single cohesive unit.
    • Ironically, Toothless lost his tail fin when Hiccup tried to kill him, but Hiccup lost his leg when Toothless tried to save him.
    • The two of them also ascended to the position of leaders: Hiccup became the chief of the Vikings, while Toothless became the Alpha of the dragons.
  • It is hinted a few times that Toothless has astraphobia (fear of lighting and thunder), which is ironic as Night Furies are referred to as the "unholy offspring of lightning and death itself." This could be due to the tail as it incorporates a lot of metal and lightning is attracted to metal.
    • In How to Train Your Dragon: The Hidden World however, Toothless is shown channeling lightning into his body without any signs of fear, which suggests that he managed to overcome his astraphobia some time ago.
  • In some scenes from Riders and Defenders of Berk, Toothless' color is dark blue.
    • However, it is possible that this is intended so that Toothless can be seen in the dark.
  • Toothless can sleep upside-down in a similar manner to a bat.
  • Toothless is capable of walking on his hind legs, as shown during his attempts to draw like Hiccup and threatening to throw him off a cliff.
  • When Toothless begins glowing for his climactic battle against Drago's Bewilderbeast, the way his spines light up with blue as he shoots unlimited fire blasts is a possible reference to the famous Japanese giant monster Godzilla, whose spines light up with energy as he unleashes his atomic breath.
    • Coincidentally, the 2014 American Godzilla film came out exactly one month before How to Train Your Dragon 2.
    • The sequel Godzilla: King of the Monsters came out three months after How to Train Your Dragon: The Hidden World, and like in the end of the second film where Toothless became the Alpha Dragon, Godzilla became the Alpha Titan.
  • Toothless seemed to have gained the large scars on his legs from his battle with the Fighter Razorwhip in the episode "Stryke Out".
  • The symbol on Toothless' tail fin in How to Train Your Dragon 2 is similar to the symbol on Steve Plachuk's shirt from Trollhunters (Tales of Arcadia universe). 
    • Coincidentally, Toothless makes a cameo in the first episode of Trollhunters, "Becoming: Part 1", on a laptop screen, looking at a butterfly.


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