Fire Types

In both book and film series, many of the dragons are shown to possess unique types of breath weapons. These differences make the dragons attacks much more unique. Here are some examples. This ability specially makes dragons to dragons, and put them 'different' from other organisms, and even capable of confront human beings armed with artificial weapons and group strategies. Film variations Flame-breathers Every dragon's fires are fuel-based, and are different. Firepower is enhanced through combinations of unique sources of ignition and particular fuels. This can, however, be a weakness, as dragons aren't fireproof on the inside; an alert dragon can ignite another dragon's fuel the moment before the dragon itself does, causing the fuel to burn inside the dragon. The effect of this varies, from a slight daze to permanent wing damage.

Based on scenes in How to Train Your Dragon 2 when dragons of Berk and Dragon Den were released from hypnosis caused by Drago's Enslaved Bewilderbeast and counterattacked this massive enemy together, possibly all the fire-breathers are capable of differentiating flames of normal and in explosive, ball shaped.

Terrible Terror
Terrible Terrors have a Propane based fire attack. This fire was described more as sniper bullets than flamethrowers. Their fire projects in long concentrated streams with deadly precision. Gobber says that you know when their about to strike when you hear a little hissing sound.

Timberjack
The Timberjack spits a fire similar to the Monstrous Nightmare's. It is slightly more sticky and globulous. It resembles burning embers and create beautiful glowing sparks. The Timberjack will occasionally secrete a few drops of its oil-based fire to burn the kindling wood it has chopped and collected. It can, then, fold its wings around the fire like a tent to warm itself, just as it's seen on the Book of Dragons short.

Typhoomerang
The Typhoomerang flies in a scorching tornado of whirling fire. It is capable of creating a huge whirling burn mark with its fire. The fire also acts like a fertilizer, because once the plants are burned by the fire, they will regrow and become more fertile.

Boneknapper
The Boneknapper has a fairly regular looking fire. Similar to the Red Death, this dragon takes a deep breath before breathing a huge flowing stream of ashy fire. It does not appear to have extremely hot fire since the kids are able to survive very close to the fire during the Legend of the Boneknapper short. Also the fire keeps coming up and down in waves.

Smothering smokebreath
The Smothering Smokebreath breathes extremely hot fire and smoke.

Fire The Smothering Smokebreath breaths very hot fire. It is so hot it seems to be able to weld or melt hard metals together. The hot air may function similarly to a hot air balloons fire.

Smoke The Smothering Smokebreath emits large amounts of smoke from its mouth to create a thick cloud of smoky fog to hide itself. They are often mistaken for ghosts and other supernatural creatures, such as a "Fog Monster". According to the Riders of Berk DVD extra, "Dragon Tracker," the smoke is emitted from their skin much like the Monstrous Nightmare's fire jacket.

Red Death
The Red Death is a tremendous dragon, and its fire is equally massive. One blast incinerates the entire Berk fleets, and is released for long and the jet flame-like torrent along with gusts is powerful to destroy surroundings thanks to the dragon's tremendous lung capacities and exhaling power. It is a methane-based, billowing orange flame, and it has more ash than most other dragon flames, similar to pyroclastic blast of a volcano. It creates large amounts of black smoke, which makes it unique than any other dragon which don't create smoke. The Red Death inhales deeply before shooting fire. Directly after being ejected, the fire is a blue hue, but it quickly turns to orange. The fire in the film can go over half a mile according to The Art of How to Train Your Dragon, and the fire will be shot in very similar manner as of a flamethrower. The dragon can cover the lack of agility and blind spots from faster or smaller enemies by flipping in midair in three-dimensional circular motions, resulting in engulf surrounding area and sear the targets.

Hobblegrunt
The Hobblegrunt shoots an Ethane expectorant. This suggests that this fire has a liquid consistency, similar to that of the Monstrous Nightmare.

Rumblehorn
The Rumblehorn expels long-ranged 'fire missiles' which initially start out as a white-hot fireball that quickly solidifies and turns to a warmer color before it ends up in a sooty stony material when it hits its target. It is also capable of breathing normal flames.

Fireworm
Like the Monstrous Nightmare, they are capable of setting themselves on fire and glow in the dark at the same time. The fire that they emit burns hotter than the sun, which means that the Fireworm's flames are as hot or hotter than the Deadly Nadder's Magnesium fire. The tiny Fireworms are not shown to have any fire breaths.

Queen The Fireworm Queen is capable of breathing streams of hot fire (a similar type with the Monstrous Nightmare's fire; a bio-firecomb of topical and flammable gel ) that spews out small fireworks. It is one of the most powerful fire breaths of all dragons.

Whispering death
The Whispering Death's fire takes the shape of rings of yellow fire and smoke. It also has the ability to spit normal fire as seen when Whispering Deaths attack Bork and his girlfriend from below.

Screaming death
The Screaming Death's fireballs can be launched either one at a time, or in rapid succession, much like a machine gun. Every time it launches a fireball, the frill on the Screaming Death's head flashes with flames and the fireballs themselves explode on impact in an incendiary fashion. Alone, these fireballs are also shown to be extremely powerful, as one of them was able to obliterate a tower in Berk in one shot. The Screaming Death is also capable of jetting out 'concentric rings of fire matching the round shape of mouth' which are identical to those used by the Whispering Deaths.

Stormcutter
The Stormcutter shoots sustained, blazing torus of fire that forms a spiral. As seen in a deleted scene for the second movie when Hiccup tries out some of Cloudjumper's fuel in his fire-sword, this fire is extremely powerful and hard to control.

Monstrous Nightmare
The Monstrous Nightmare has some of the most dangerous fire. It is made up of kerosene gel, so unlike other dragons who make fire with gas, they produce a flammable liquid and ignite it. When the Monstrous Nightmare breathes fire it is a sticky burning liquid; literally a bionic napalm. This fire is very destructive as it flows over houses and fields, but it actually doesn't seem to really be that hot as Hiccup is able to stand relatively close to it when he is being attacked by this fire. Nightmare out of flames Because the fire is sticky, the Monstrous Nightmare often coats itself in it - another possible sign that the fire isn't all that hot, as Hookfang's fire coat causes discomfort but no real damage to people sitting on even a full burn. It should be noted that when using their firepower they are always seen spewing it over a target as oppose to blasting it, or when they blast it it is usually at short-range. *At least Hookfang can create a condensed ball of flame with greater destructive power by igniting himself and fly, breath fire in circular motion, then blow the ball by flapping his wings towards the targets.

Night fury
The Night Fury's fire is an explosive semi-solid mass of acetylene-oxygen flames. The flames are blue with a white core when first released, the blast then turns purple and white when the flames are cooled. When at charging energy and shooting, high-pitched sound emit. The whole blast of plasma is created with 4 things, acetylene, blue fire which is created by oxygen, the green gas as fuel and the intense heat of the gas can create fire with a blue coloring (as can be seen when Toothless was about to kill Stoick in the first film), and electricity as the main internal core which is created by bio electric pulses created inside the body. When it hits a target it explodes on impact. The explosion is made up of a bluish-purple gaseous ring and a huge ball of fire at the center. The blast of plasma will explode even if it does not hit a target, because at high altitude, carbon dioxide is abundant and replaces the oxygen which creates the fire. The blast with no fire then explodes (as can be seen when Hiccup is riding Toothless for the first successful test drive). A Night Fury's flame can also be sustained for long periods of time, similar to a blow-torch. This is shown only when Toothless is preparing to rest or sleep, which he uses a sustained blowtorch-like flame to warm an area before resting there. Contrary to what the Vikings claim, Night Fury's fire probably burns hotter than the Deadly Nadder's. This is because acetylene and oxygen can burn at around 6,500 degrees Fahrenheit (hot enough to melt Tungsten, which has the highest melting point of all metals), while magnesium burns at around 5,600 degrees Fahrenheit. Though since no one has been able to capture, much less study a Night Fury this can be considered obsolete information. Toothless' acetylene-oxygen flame is actually ionized enough to become plasmoid (at least according to Hiccup). This would explain why it explodes on contact. Plasma works almost like a cross between a liquid and a gas. Interestingly it can exist a many temperatures (not just extreme heat). Night Fury fire seems to carry this through. Toothless has been seen to use smaller blasts just to blow things over or illuminate dark areas. These blasts do not seem to be as hot as his others, and it is very likely that he can control the relative strength and heat of his blasts. Toothless seems to refrain from using the higher temperature, more lethal blasts against enemies when he can help it. This is almost certainly due to Hiccup's influence on him. While in some cases Hiccup says that he has a limit of six shots, there is a lot of uncertainty about that, even if some sources, and even Hiccup himself in one episode states that his limit is 6, that fact might not be entirely true as even in original movie, in final fight, he was able to give more than 10 shots, with 7 full powered ones in really quick succession. or possibly, Night Furies recharge their shots very quickly, with weaker blasts recharging faster than others while more powerful blasts slower, but still rather fast. The shots might even recharge quick enough to give the Night Fury seemingly more shots than it's shot limit allows.
 * At least for supplementary usages, Night Fury is known to breath a stream of normal fire.

Deadly Nadder
The Deadly Nadder's fire is very hot. It is said to be able to melt steel and turn a Viking into ash in seconds. The Nadder's fire is made up of magnesium, causing the fires look like torrents of concentrated sparkles. This results in the fire burning in a brilliant bright color with sparks flying off of it. Magnesium burns at around 5,600 degrees Fahrenheit. The Nadder seems to be able to breath fire without taking a deep, open mouthed to inhale, this seems to be a common ability among dragons. Theses dragons usually emit fires within relatively short period (in an instant) and the flames travel fast and straight, but they are actually capable of sustaining fires for long periods of time. However, due to its blind spot, they prefer to use their tail spines instead of fire.

Gronckle and Hotburple
Two very similar species; the Gronckle and Hotburple share this powerful ability. Their fires are very unusual ones, more likely of shooting compressed magmas or volcanic rocks. These dragons first eat rocks or metals, that melt in their stomach, and regurgitate and spit them back out as balls of molten lava. The substances they use to melt these rocks is Heptane/Oxygen. These lava blasts are shot out with great force and can cause serious damage once they hit their target. Attempting to block one of these blasts with a shield would probably not work. Because the blasts have a fairly solid base the blast will plow through obstacles until it hits something hard enough to splatter the lava ball. This is seen in Riders of Berk episode 'Alvin and The Outcasts' when the dragons attack the outcasts, and proved to be effective even on big, strong foes such as Screaming Deaths. If a Gronckle ingests lots of small rocks or pebbles, it can quickly shoot them out before they completely melt and fuse with each other creating the regular lava blast. When it does this, the pebbles will be expelled in a rapid succession similar to a machine gun, though unlike a machine gun, these rocks will spread in a wide area. This attack is useful when attacking multiple foes at once, as seen on Dragon Down.

Hideous Zippleback
The Hideous Zippleback has one of the most interesting ways of producing fire. Unlike most other dragon who breath in a flammable gas and then ignite it while exhaling, the Zippleback has one head that produces the gas and exhales it without igniting it. This gas is made up of Ammonium Nitrate mixed with Anhydrous Hydrazine, which has an explosive effect and produces a great deal of smoke. These chemicals produce a huge, flowing, green fog. The fog is said to have a noxious scent (this suggests it may be metabolic gas, like flatulence). It is bad enough to make anyone who breaths it in feel extremely nauseous. The gas, after being exhaled, is then lit by a spark from the other head. In addition, in battles, the Zippleback has the ouroboros-like power to bite their own tails and set themselves on fire, taking on the form of a flaming wheel that knocks down their opponents like ten-pins.

Regular fire
As seen on the comic Dragon Down, both heads of a zippleback are capable of releasing regular streams of fire. This fire looks somewhat similar to the fire used by the Red Death.

Scuttleclaw
It appears that Scuttleclaws can shoot green fire. This might suggest the presence of copper in the fuel.

Snaptrapper
Snaptrappers emit a Methane based mist. Since methane is a flammable gas it is assumed it can be set on fire in a similar manner to a Hideous Zippleback's gas.

Snafflefang
The Snafflefang breathes brightly-colored fire that can be used to illuminate dark caves.

Non-fire projectiles
Some of these dragons can also breath normal flames, but using them less frequently, or not for combat, and are usually less powerful than their main weapons.

Scauldron
The Scauldron's "fire" is not fire and therefore unusual, though since these dragons live in the sea, they can't use fire anyway. These dragons first swallow a gallons of water, heat it in their stomach, and then fires the water in a scalding jet at its prey/victim. The dragon gets its name from this ability. The water it spits is extremely hot and will usually finish off it's prey/victim with a single shot. Gobber claims it will melt the flesh right off your bones.
 * The Scauldon may or may not be able to demonstrate the ability to breathe fire, as some Vikings have smelled the flammable gas that comes before flames..

Bewilderbeast
The Bewilderbeasts have the ice blasts which are the most powerful and destructive of all biological ranged attacks in the world of How to Train Your Dragon. They sucks up masses of water from the sea and stores it in pouches down its neck, then, since its breath is so intensely cold, it regurgitates the water with so great a force that as it hits its target, it breaks apart and freezes, mid-splash.

Tide Glider
The Tide Glider sprays water which is contaminated with bubbles that have the saliva that can heal wounds.

Flightmare
The Flightmare shoots a toxic glowing blue mist that paralyses its victims just long enough for it to finish them off. Rather than freezing a target immediately, the initial paralysis seems to be caused by "stiffening" the skin, making it harder for the muscles to work. As the skin absorbs the mist, the muscles themselves are paralyzed. The victims appear "shiny" until the mist wears off possibly because of some elements of the mist not being absorbed by the skin and has to dry off.

Woolly Howl
The Woolly Howl is capable of launching ice balls.

Groncicle
The Groncicle freezes its targets with exploding ice attacks

Changewing
Their acid is green, gurgling, sticky, and melts through most substances. The Changewing can spray large amounts of acid at a time. It is highly dangerous and is shown to eat through huge wooden trees in seconds, however it cannot destroy metal. The dragon appears to be mostly immune to its own acid as it can walk through it without showing any signs of pain. But in the short Book of Dragons, they appear to breath fire. However, this could be added because of comical purposes (because the fire burns Bork, who was trying to make fire by blowing, so the changwing did the same but breathing fire instead).

Sliquifier
The swift-moving Sliquifier uses its speed to churn up a powerful acid stream to fire at its opponents.

Snaptrapper
In Rise of Berk the Snaptrapper shoots a green acid that can melt through metal.

Submaripper
When a Submaripper is forced to fight it uses its exploding acid attack to make sure the battle is over as quickly as possible.

Sweet Death
When the Sweet Death picks a sweet spot in a battle, it usually stays put until its acid attacks win the day.

Tide Glider
According to Rise of Berk, the Tide Glider coasts along the waves peacefully, until it spots an enemy in the distance and shoots an acid ball to clear a path!

Skrill
The Skrill spits an electrical white fire as its body crackles with static electricity. As soon as the dragon begins to breathe its lightning-like breath, the electricity arches through its mouth and sparks along the gasses that form the body of the blast. It is one of the most unique types of blasts since it contains both an extremely hot fire and an electrical current. It also creates strong ozone smell, because of air ionization during discharge.

Grapple Grounder
The Grapple Grounder can shoot a light-blue ball, possibly of electricity or plasma or the sort. It can shoot multiple of the blue orbs at a time, but at a sacrifice of size. The balls have a somewhat magnetic field, drawing towards larger objects than it (ie, opponents or victims), however the more decreased the size the stronger the force is. This information could also infer it might be electromagnetic. If a Grapple Grounder takes a deep enough breath, or charges it long enough, the fire will come out as a big blackish sphere that explodes impressively upon impact, almost fatal. Its bomb contains Magnesium gel.

Seashocker
The Seashocker, utilizing the ability to produce biological electricity, can attack and stun targets at mid-ranges with highly-charged electron waves or currents.

Shockjaw
The Shockjaw can shoot bio-electricity.

Thunderdrum
The Thunderdrum delivers a sonic blast that is deadly at close range. Thunderdrum lets out sonic blasts so loud it's been known to shatter glass and crack teeth. The blast ripples through the air and can push obstacles and enemies back at great speed. It is, as mentioned earlier, really only severely dangerous at close range, but it remains a devastating attack all the same. At the very least, a normal person's eardrums run the risk of rupturing. It has proven strong enough to break off the main mast of a ship and send a horde of wild boars flying. It is theoretically possible that the sonic roar would be more effective against targets that are underwater, since sound travels better through water, which makes sense as the Thunderdrum is amphibious. According to the legends, the Thunderdrum gets this power from Thor himself. It is capable of delivering a thunderous sonic blast that can be heard for miles. Thunderdrum babies hatch from their shells by making a sky-rattling sonic boom. Their sonic roar is even capable of reflecting small projectiles making it both a defensive and offensive weapon. Some dragons seem to be immune to its roar or only slightly affected by it such as the Whispering Death. However, by focusing its sound into a more concentrated form, the Thunderdrum can release a sonic blast than can do more physical damage. As shown with Stoick's Dragon Thornado, this can either knock down juvenile Whispering Deaths, or even briefly stun a Screaming Death. When several Thunderdrums cooperate, the combined blast is powerful enough to knock off many wild dragons instantly.
 * Thunderdrums can also shoot blue blasts of fire. These fireballs get larger the farther they go.
 * Thunderdrums are the only species to utilize sounds as weapons in terms of offensive means other than supplemental shrieks by the Screaming Deaths (see below).

Deadly Nadder and Monstrous Nightmare
In Heather Report Part II, Astrid and Snotlout combined the attacks of their dragons. Hookfang would set himself on fire (everything except his head and part of his neck to avoid toasting his rider, apparently) and fly across Stormfly's path right as she launched her spikes. When timed correctly, the spikes would set on fire as they passed through the edges of the fire jacket, making it even more important to get out of the way.

Night Fury and Thunderdrum


In Live and Let Fly, Hiccup and Stoick fought against an armada of outcast-ships, and Hiccup noticed that Toothless's plasma burst combined with Thornado's sonic roar to make a fireworks display of purple sparks. He called it a plasma scatter-shot.

Night Fury and Skrill
In View to a Skrill Part I and II Toothless fires a Plasma Blast at the Wild Skrill and then the Skrill fires back with its lightning, creating a purple plasma lightning explosion.

Eel Effect
Eels have been shown to affect dragons fire differently. For a Night Fury, for instance, it creates a red plasma shot that explodes on impact and it increases the shot limit. This comes at the cost of the dragon getting Eel Pox (which is why most dragons avoid eels). Typhoomerangs on the other hand can consume eels to increase their shot limit and fire power without contracting the disease.

Non-Projectiles / Special Weapons / Unique Attacks
Some dragons lack any kind of ranged attacks and rely on other weapons. So far the only dragons that don't have a ranged attack is the Speed Stinger.

Tail Spikes: Used mainly by the Deadly Nadder and sometimes by the Whispering Death and the Screaming Death. It was used for additional purposes and poisonous attack.

Bump Blast: Used by the Gronckle. When provoked, Gronckles can inhale deeply, and the bumps on their body blast off in every direction.

Tail bludgeon: Used by the Gronckle and Hotburple, they get close to the targets and beat them using the tail tips.

Tail Whip: Used by some dragons using its tail to whip enemies.

Rotating teeth/Vacuum: Used by the Whispering Death to make tunnels, by reversing the rotation of its teeth, the Whispering Death can create an inescapable vacuum effect. The Screaming Death is also capable of demonstrate vacuum attacks despite lacking rotating teeth of the main species.

Inhaling: Due to large lung capacities, the Red Death and the Screaming Death can cause strong inhaling air currents that are powerful enough to make extremely fast-flying targets, such as Night Furies or Deadly Nadders, hover and even be drawn backwards.

Paralyzing sting: Used by the Speed stinger. It uses the barbed end of its tail to inject poison to its victims that paralyze them temporarily.

Shriek: Used by the screaming death. It is a loud sound that disorients other dragons.

Camouflage: Used by the Changewing, mostly for defensive purposes. It can also be used to sneak on prey or for strategical attack/defense of territory.

Electrical Bite: Used by the Seashocker, they can paralyze their victims through their bite, using a powerful electrical discharge.

Odor: Used by the Snaptrapper and the Sweet Death. The Snaptrapper can produce different smells for different purposes. If it wants to attract prey it produces the tempting smell of chocolate. If it wants to repel other dragons or vikings it produces a noxious smell of putrefaction that scares off even the most starving Titan Wing. Similarly the Sweet Death buries itself underground and uses its sweet scented tongue to attract prey.