About fourteen years before the events of the first film Ruffnut was born, followed by the birth of her twin brother a short time later. Her mother named her "Ruffnut" because she was the "rougher" of the two infants. She enjoyed a close relationship with her mother growing up, as she had fond memories of her mother singing to her and protecting her from her rambunctious twin. Up until she was twelve, her mother even chewed her food for her.
She spent a lot of time with more extended family members, suggesting they had a very close knit family. Ruff even contracted fleas at one point picking the bugs off an uncle's back. She played a lot with cousins of a similar age, and some of their greatest times were spent at older family members' funerals.
Ruff always had a complicated relationship with her brother, claiming to have grown up being scared of him. They often suggest they remember fighting as far back as in the womb.
Joining the same Dragon Training class as Hiccup, at first Ruffnut delights in taunting Hiccup over his poor performance although she doesn't have much success either due to the fact that she couldn't get along with her brother in battle. Later, however, when Hiccup displays an amazing talent for subduing the dragons, she becomes his avid fan (often pushing and shoving Tuffnut to be the first to talk to him). Ruffnut seems to develop a crush on him and flirts with him (before Astrid pulls her away). Ruffnut decides to join the other teens in helping Hiccup fight the Red Death.
To confront the Red Death, the twins mount the Hideous Zippleback that had been kept at the arena, which fits their fractious relationship, the two naming the dragon Barf and Belch. Each head seems to agree with one of the twins in particular--Ruffnut taking Barf and Tuffnut taking Belch---and they ride it to great effect in the final battle and afterwards. Notably, they were the only ones not forced from their dragon in the final battle.
Ruffnut, along with all the other dragon riders, heads on a quest with Gobber to find the legendary Boneknapper. The ship becomes shipwrecked upon a island and the dragon riders are stranded. Then they decide to set up a trap to find the dragon, using Fishlegs. Eventually they train the dragon and use it to fly back to Berk.
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At the official creation of the Berk Dragon Training Academy in "How to Start a Dragon Academy", Ruffnut becomes an official Dragon Rider and Dragon Trainer. She and her brother seem focused on the more destructive abilities of dragons, and what fun they can have.
In "Viking for Hire", Ruffnut and Tuffnut with Barf and Belch, along with the other riders, become guinea pigs for Gobber as he tries to find his place in a dragon-friendly world. He crafts elaborate saddles for the dragons and in the Twins' case, develop built-in catapults which promptly knock out both Barf and Belch.
Though part of the Dragon Training Academy, Ruffnut expresses her dismay at "learning" when the Riders try to study Torch, a young Typhoomerang found in the woods in "The Terrible Twos". She laughs when the dragon jumps on Tuffnut and chews on his nose, but is promptly silenced when Torch jumps on her and bites her nose as well.
During the events of "In Dragons We Trust", the Twins are forced to leave Barf and Belch on Dragon Island. This is because Mildew framed Barf and Belch and other dragons for property destruction around the village, including stealing everyone's boots on Boot Night and leaving footprints leading to Barf and Belch with a pair of Zippleback Boots.
The Twins and Snotlout inadvertently discovered a cryptic treasure map to the riches of Hamish I hidden by Hamish II, in "Portrait of Hiccup as a Buff Man". Gobber took it away from them and bade them not to pursue it, as the quest was dangerous. Despite that, the Twins, Snotlout, and Fishlegs stole the map from the Blacksmith Shop. Astrid and Hiccup catch them, but eventually join in. The Riders go to various places around the Isle of Berk, following the clues. They were able to avoid danger due to their dragons. In the final location, in a cave full of small Fireworms, Hiccup and Toothless fell into a hole and the cave caves in, while the Twins and the others escaped. Hiccup and Toothless eventually found their way out with the rightful treasure - an accurate portrait of the Hamishes.
Ruffnut and her brother experienced a brief falling-out in Twinsanity, when her conflict with Tuffnut reaches the point where they attempt to issue separate orders to each head. They eventually reconciled when Barf and Belch were in trouble, accepting that they would always share their dragon even if they could find other individual interests.
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In "Zippleback Down', the twin went with the team as they attempted to disable traps that were left over from the time when they killed dragons. While searching for traps, Tuffnut ends up being caught in one. Ruffnut decides to go to Berk and find Hiccup. When she attempts to fly Barf and Belch, they quickly crash land since they need two riders. She decides to go on foot and tells the Zippleback to watch her brother while she was gone. Ruffnut soon sees a forest fire, caused by Barf and Belch, and head back to Tuffnut. She is startled by the Typhoomerang next to her brother, who shows her he trained the dragon. Hiccup then goes to find them, only to be thrown down when Toothless' prosthetic tail was burnt off. With Hiccup's help, they soon realize that Tuffnut's new dragon friend is actually Torch. When the forest fire draws close to the village, Hiccup almost gives up, but the twins figure out a way to keep the fire away from Berk by "fighting fire with fire." Once the fire is out, they returned to Berk, riding on Torch, where he leaves after saying goodbye to Tuffnut. Despite their amazing feat, Tuffnut has yet to have learned a lesson by releasing himself from the trap without help. Despite her efforts, Ruffnut ends up being trapped in the net as well.
When a frozen Skrill is brought to Berk, the twins and Snotlout were the prime cause in releasing it. The Dragon Riders set out to find the Skrill, as well as keep the Dagur and the Berserkers form getting it. After splitting up into two groups, the twins attempt to drive out the Skrill by causing a big explosion with Barf's gas and Belch's spark. After saving Hiccup from the Skrill, they're chased by the Skrill ,and Hiccup and Toothless narrowly make it to block the blast of lightning with a plasma blast. The explosion was so great, it knocks the twins out of the sky and away from the group. They land on a seastack and spot Alvin capturing the Skrill. They decide to follow the ship. Meanwhile, their disappearance causes the other Riders to search for them.
Hiccup goes to find them and meets up with them on Outcast Island, where they were spying on the Outcasts. Tuffnut goes undercover to find out about the Berserkers' and the Outcasts' apparent truce. He then helps Hiccup to find the Skrill, but it was too late as Dagur managed to get to it first. After Hiccup duels with Dagur, as well as the Skrill (after it's been freed), the twins help seal the hole and encase the Skrill in ice once again. After the chaos had ended, the twins and Hiccup return home to Berk.
The Riders find an injured Scauldron on the beach of Changewing Island. Unable to get close, they attempt to leave, but the dragons don't want to give up. Barf and Belch throw their riders off and Ruffnut lands next to the Scauldron. It turns out the fish oil in Ruffnut's hair calms the dragon down. With Hiccup's guidance, Ruffnut bonds with the Scauldron, naming him Scauldy. After a group of Changewing attacks, the Riders move the boulders off Scauldy's wing while Ruffnut distracts him by imitating Hiccup and singing a lullaby that her mother sang to her when she was little. However, Scauldy's wing is broken, thus unable to fly or swim. The gang decides to make a splint for him. The Changewings start heading their way to attack. After gathering the materials, one of the vines they used to act as rope snaps and they are unable to finish the splint. Getting an idea, she takes out her knife from her vest, cutting her hair to use to substitute as extra rope to finish the splint. Ruffnut then is sad to see Scauldy go and tells him to come and visit. Tuff then comments about her looking like a boy now, in which they argue. Scauldy then makes his way to freedom.
In "The Eel Effect", Ruffnut is shown to be slightly smarter than Tuff when she convinced him to slap himself by saying that it would hurt her too (since they're twins). Clearly she just said that because she enjoyed watching Tuffnut hit himself. Later, she and Tuffnut become infected with Eel Pox causing them to propose "science", showing them to not become crazy and rather more intelligent than before.
Ruffnut then took part in the first Dragon Races. She, Tuffnut and Snotlout tried to cheat by stealing other sheep but were stopped by Astrid. They then painted a sheep to look like the black one.
During one of their pranks on Bucket and Mulch, the twins found Trader Johann. Ruffnut and the other riders then set out to the Ship Graveyard to stop Dagur, who escaped from out Outcast Island. There, Ruffnut and her brother found jewels.
Tuffnut then gave himself permission to stuff the jewels into Ruffnut's mouth. However, Ruffnut and the others were then captured by Dagur and his men aboard The Reaper and placed in one of its cages. Ruffnut then spat one of the jewels at Captain Vorg.
Ruff refused to believe to believe Tuff's claim about a new dragon on their island. So she and decided to do the Thorston Challenge. At first, it seemed like Ruff would win the challenge, but they then discovered there was new dragon and they both captured the leader of the new dragons. They then named the dragon, Smidvarg and defended when they returned him to his flock.
Ruff and her brother then examined Fishlegs for allergies, determining that he was allergic to Meatlug. She then assisted Astrid and her brother in relocating a wild Scauldron.
She and Tuff then discovered that the Edge was first discovered and claimed by their ancestor, Magmar Thorston, when they found a stone with his name on it. They briefly became leaders of the Edge, until the Fireworms came and they were forced to give the island back to the other riders.
During their attempts to capture a wild Rumblehorn, Ruff and the other riders mistook Hiccup, Stoick, and Toothless as the Rumblehorn.
Ruff and Tuff then constructed a watch tower. However, the watch tower disappeared. Ruff and her brother then attempted to rebuild the watchtower to no avail. She and her brother were then placed in charge of training the wild Gronckles from Dark Deep.
She was shocked when her brother confessed to being the rogue rider that Bucket and Mulch saw attacking a ship. She and the other riders then went to the island to find the rider and the dragon. However, they were knocked.
After learning that Heather and Windshear were the ones they were looking, Ruff and her brother were enamored with her dragon. She and the other riders then distracted Dagur's men while Heather, Astrid and their dragons took on Dagur personally.
Ruff was then stung by the Speed Stinger, Speedy, who was wounded and brought back to the Edge's outpost. Ruff and Snotlout then attempted to return Speed to his pack, but were force to crash land by Speedy.
Ruff and the other riders were then captured by Ryker Grimborn and his Dragon Hunters when they attempted to rescue to Stormfly. During their interrogation by Ryker's, Heather's and Dagur's interrogation, Ruff got down on her knees and begged them not to hurt their dragons. However, she was actually pick-pocketing the guard for his keys to free themselves. When Hiccup and Snotlout arrived, Ruff and the other riders were then able to free their dragons and escape.
She then forced Snotlout to assist her in convincing her brother that he was turning into a Lycanwing. Ruff had Snotlout be bitten by numerous dragon and animals to show the bite. Luckily, she was able to convince her brother that he was just bitten by a wolf before he tried to jump off a cliff.
Ruff was then inadvertently married by her brother to Fishlegs. However, the marriage was annulled when Tuff said he did not complete his training with Berk's officiator.
She and Tuff then worked together to get their dragon back when they started honor a life-debt to Hiccup. Together, they were able to rescue Hiccup from Ryker, Dagur, and their men have Barf & Belch back.
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Ruff has grown and, like the other Viking teens, plays Dragon Racing. She seems to be slightly a bit more mature then her brother, but in some ways she has shown, that her childish acts still remain with her.
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While dealing with Drago Bludvist and his army of armored dragons, Ruffnut, the rest of the Dragon Riders, and Valka flee attack to several different locations on and around Berk. This includes the Berk village, Berk Forest, Itchy Armpit Island, the Dragon Sanctuary, and icy region, and a volcanic cavern where Drago's Bewilderbeast is laired. Ruffnut and the Riders fend off the Bewilderbeast and free many dragons by shooting off their armor.
Later, on their way to Nepenthe, the ruders are accompanied by Tidal Class dragons that offer tribute to their alpha. The twins then decide to ride a pair of Seashockers whom they later name Soaky and Wetty.
On the island, Ruffnut relaxes in a hot pool along some other riders and dragons, instead of focusing on the task. At dinner, she collapses as well as all who bathed in the pools and they all are captured by Calder and his men.
In the prison, she listens to Calder's speech, then fights her way out, stating that her leg hair is like daggers. Hiccup then brings the dragons and they all prepare to leave, but right then some Foreverwings wake up and began destroying the village. Ruffnut then helps by getting the people to safety. After Hiccup defeats Calder, Ruffnut and the other riders arrive at the scene to see what happened.
The next day, Ruffnut is seen listening to Hiccup's speech to the village and later head-butting her brother.
Ruffnut, along with her twin Tuffnut, decide to tell the group a fictacious account of how they saved Berk from a fire breathing Gothi with their great powers from Loki.
After escaping from a cave, Ruffnut and the other Dragon Riders fight off strange frenzied dragons called Silkspanners, with weapons lit on fire with Nightmare Gel. Later, the Twins travel with Hiccup, Eret, Gobber, and Astrid Hofferson to find the source of the Dragonvine plant. The scent takes them to Dragonvine Island and find a village of people in trouble. The Riders burn away some of the encroaching Dragonvine. The group splits up again, this time the Twins and Eret search out the source of the Dragonvine on the island, while Hiccup, Astrid, and Gobber look for the Silkspanners. One of the villagers - Bayana - accompanies them. The group finds out that the villagers have been growing and harvesting Dragonvine to protect themselves from people like Drago Bludvist. The villagers capture the group as well as the dragons and toss them into a pit full of Dragonvine in order to preserve their defenses and village. In the meantime, Hiccup's group finds the Silkspanners and brings them back to Dragonvine Island as it turns out they are able to eat it. The Twins' group is saved.
While advancing through the tundra, the twins met Bjarke the Bear. At first, they mocked the man and easily defeated him, with the help of the new trainer. Some time later, the twins met him again, and Bjarke told them that the Dragonroot Company has taken over the Fortress of Ice. The trio immediately went there, but the only thing they found was an angry Bewilderbeast. After a short debate, the twins decided to let the new trainer face the giant dragon without them.
The trainer managed to defeat the Bewilderbeast, without killing it. The twins then wondered what exactly was Bjarke's plan. Tuffnut deduced that the Dragonroot Company was training an army at the Burning Barrens, and Ruffnut agreed. The twins then sent the trainer to the fiery location, while they returned to Berk.
New rider Scribbler and his dragon, Patch, correspond with the Dragon Riders on Berk through Terror Mail. He is seeking information that might pertain to the mysterious drugged dragons and other things happening on and around Havenholme. The Twins intercept one such correspondence. Ruffnut replies that she can indeed read and write, then asks if Scribbler is single.
|“||I never look back, Hiccup. [src]||”|
Along with the other Riders, Ruff had a flight suit made from the shed scales of Barf and Belch, which she wore on raids to rescue trapped dragons. She started styling her hair with both braids on one side, causing her to hold her head at a tilt. But that didn't hinder her from freeing dragons from their cages, even when she needed help to open them.
She continues to be annoyed with her brother due to his constant insults and his ridiculous hair style to make up for his inability to grow a beard. During a meal in the Great Hall, she's involuntarily involved in a food fight when he throws a piece of meat at her and it gets in her hair. She stops fighting for a moment at the mention of Hiccup and Astrid getting married, and says she's the only one allowed to talk about marriage.
Later at the forge, she and Tuff are brushing their dragons' teeth while listening to Hiccup talk about the Light Fury. Both twins are disgusted at the thought of Toothless being in love, and Ruff suggests Hiccup so something about it.
After Hiccup's house is burned down, Ruff joins her brother and the rest of the village in the Great Hall for a midnight meeting that their chief called. She picks at her finger nails while listening to Hiccup's speech, and sarcastically mocks a nearby woman for questioning Hiccup's ideas. When Tuff suddenly stands and gives loud verbal support for Hiccup and encourages others to join him, she gives her brother a confused look.
While searching for the Hidden World, she laughs at Tuff's comment about stars being "small and stupid". Tuff appears to appreciate her finding humor in his comment, and comments further how he's right. However, once they arrive on New Berk, he says he's going to build a magnificent hut there, but tells Ruff she has to stay out because his hut will be only for the bearded, and her chin whiskers don't count.
When Valka returns from a scout mission and announces that Grimmel is tracking them, Hiccup decides they need to take him out of the mix. So Ruff joins him and the other Riders in what they hope will be a secret ambush on Grimmel's fort. She at one point grabs Tuff and pulls him out of sight after he jokingly starts mocking Grimmel's dragons. But the ambush goes awry and the Riders each flee for their lives as the fort is burning down. The Crimson Goregutter crashes into the tower, toppling it and extinguishing much of the fire just as it's revealed that Ruff has yet to escape. She candidly complains to Grimmel how Fishlegs is always bringing Fishmeat along, leading to the Goregutter also following them everywhere. Grimmel is surprised and confused at her still being there and speaking to him.
After being accidentally left behind at Grimmel’s base by the dragon riders, Ruffnut is thrown in a cell along with a wild blue Scuttleclaw. She decides to take this opportunity to try to annoy the dragon hunter as much as possible, rambling on about trivial things such as her brains, love life, hair, and food preference. She piques Grimmel's attention after she mentioned the location of the dragon riders giving him an idea to use her to get to them. He claims that he had never seen a creature so annoying and frees her along with the blue Scuttleclaw. She takes this as a compliment and tests his patience one more time by asking if she can use the restroom before she leaves. He gives her a threatening look, and she finally agrees to leave, telling him that stress is not good. Cackling at her success at being released, she rides the Scuttleclaw home. Unbeknownst to her, he then follows her to find the dragon riders' location.
Back at New Berk, the Scuttleclaw lands in a meadow where Hiccup and Astrid happen to have recently arrived after returning from the Hidden World. She gleefully announces her return and asks if they missed her as she tosses her helmet aside. They're astonished that Grimmel would just let her go, and she explains that it had been her plan all along to annoy him until she was released. This alerts the couple and Hiccup asks if she's sure no one followed her, to which she smugly replies that she never looks back. Panicked that Grimmel might now be on the island, Hiccup runs after Toothless and the Light Fury who are nearby, but to no avail as Grimmel suddenly appears and shoots both dragons with his Deathgripper darts and carries them off with his airship. Ruff joins in the panic a seeing what's happening as the rest of Berk's dragons follow their alpha and the other Riders run toward them in confusion.
After the dragons are gone, Ruff is ready to give up until Hiccup implies he has a plan and to trust him. And when he tells his friends that they can glide down to Grimmel's armada using their dragon scale flight suits, she still doubts him. However, when he admits that they all are the best he could all for, Ruff swoons and announces that she's with him, much to Tuff's annoyance since it's usually him who announces support for Hiccup.
When they jump off the cliff, Tuff freaks out and grabs onto Ruff's legs causing the two of them to start plummeting toward the sea below. But she manages to kick him away, and they both land powerfully with their friends on the deck of one of the ships. With their dragons out of commission, they follow Valka's advice and work together. In the end, it worked well, and Ruff returns to New Berk with Tuff and their dragon. And when they decided to join the rest of their tribe in releasing their dragon, Ruff understandably looked very sad, but found a little comfort in Tuff's gentle nudging of her shoulder. They sadly watched as they watch Barf and Belch fly off for the last time.
A few months later, at Hiccup and Astrid's wedding, Ruff is turned off by all the emotion, but when Fishlegs embraces her in tears, she hugs him back and tells him that he wins because she likes sensitive guys.Snoggletog season with her romantic partner, Fishlegs Ingerman. He bought her a festive axe for sale in the village center. Later, Hiccup and Astrid came up with the idea to hold a Snoggletog Pageant celebrating the bond between dragons and Vikings. She helped out with set up and also behind the scenes during the pageant, working a pulley system. Unfortunately a fire starts, as well as her distraction with kissing Fishlegs, caused the pageant to dissolve into chaos.