History NightmareFuel / HowToTrainYourDragon

[[folder:First movie]]
* Hiccup in his first few scenes proves to be a source of duress for Stoick, who pulls him out of passing dragonfire and yells at him for being outside during a raid. Then Hiccup disobeys those orders to test his dragon-trapper, which leads to a Monstrous Nightmare nearly burning him alive. As Stoick reveals, Hiccup does this on a ''regular basis''. What's worse is, from Stoick's annoyed reaction upon seeing the Monstrous Nightmare chasing his son, something that would give any parent a heart-attack, Stoick's ''getting used to this''.
* Gobber points out the terrifying truth that Stoick won't always be around to protect Hiccup. His son is growing up, and always running into danger. Stopping him isn't possible. The best Stoick can do is prepare him for it.
* If things had gone differently in their first encounter, either Hiccup would have cut out Toothless's heart or Toothless would have burned Hiccup to a crisp. This makes their respective acts of mercy and developing bond more meaningful.
* The falling scene, especially once they pass the peak of the mountain.
* The Red Death's [[JumpScare introduction]]. You hear it roar moments before its head erupts from the magma to casually swallow a Gronkle whole, visibly [[HorrifyingTheHorror causing all the other dragons to shrink away in fear]]. [[FromBadToWorse And then it smells Hiccup]], which causes it to start climbing up through the hive to get at him, off-handedly eating a Zippleback that didn't move in time.
* InUniverse for Stoick, when Gobber informs him that Hiccup has a way with dragons. After watching the second film, guess who else had a way with the beasts...
* Early in the movie, Stoick leads a few of the other Vikings in the tribe in three longboats to head to Helheim's Gate, which is [[OminousFog wreathed in fog with the only thing visible being three pillars of rock.]] However, once the Vikings head in, [[SinisterSilhouettes we get a brief glimpse at a Monstrous Nightmare illuminated by the fire of other dragons in the mist]] [[BattleDiscretionShot before cutting away to the Deadly Nadder.]] [[NothingIsScarier Only one longboat returns to Berk. We don't get any explanation as to what happens to the other vikings, but we can assume most of them were killed in the skirmish.]]
* The Red Death, a dragon the size of a mountain, taking flight and ascending into the sky after Toothless and Hiccup. Having it emerge from the earth is terrifying enough, but seeing something that looks like the unholy spawn of Fenrir and Jörmungandr take to the air and disappear into the clouds can leave one awestruck. That's the point where the Vikings probably thought that [[{{Myth/NorseMythology}} Ragnarok has started and the world was about to break.]]
** It comes ''very'' close to becoming a HeroKiller twice over, nearly crushing Fishlegs underfoot before being distracted by Snotlout hitting it in the eyes. Later on it comes within millimetres of [[EatenAlive swallowing Astrid and her Nadder whole]] through its VacuumMouth, stopped only by Toothless blasting it in the face. If either of them had been even a second slower, Fishlegs and Astrid would have been killed, simple as that.
** Not to mention seeing it spew ''waves'' of fire when it can't keep track of where Hiccup and Toothless are flying. When most of the other dragons have been shooting quick bursts of fire, watching the Red Death go ''ballistic'' and unleash a continuous stream of flames through the sky (roaring in utter rage all the while) is just terrifying.
** The Red Death's design is pretty creepy. It's got MoreTeethThanTheOsmondFamily, [[ExtraEyes small, rheumy-like eyes]], cracked/decayed-looking skin and a mouth like that of a theropod, on top of being covered in [[SpikesOfVillainy coral-like spikes]]. While all the dragons in the film have lots of teeth that are proportionately very big, along with the occasional disturbing design element, the Red Death's stand out more thanks to how huge it is and the UglyCute designs of the other Dragons.
** [[AssholeVictim While it's very difficult to argue that it didn't deserve it]], the Red Death's final moments are pretty unpleasant - [[OhCrap we see its eyes bulge in terror as it realises it's about to hit the ground]] while its wing membranes visibly shred/burn apart, followed by it exploding in a firestorm that nearly kills Hiccup and Toothless (and does leave the former [[AnArmAndALeg down a leg]]).
** The beast is summed up by Stoick the Vast, who had been established as a Badass among Badasses, in three simple words.
--> '''Stoick''': [[OhCrap Odin]] [[OOCIsSeriousBusiness help]] [[BreakTheBadass us.]]
** And worst of all, we know next to ''nothing'' about it. In both movies, and all 8 seasons of the TV show, we never find out anything else about the Red Death. It’s implied to be an alpha dragon but it doesn’t come from any known species, and we have no idea if there even are any other dragons like it. [[NothingIsScarier Even amongst mysterious dragons like the Screaming Death and the Night Fury, the Red Death is a complete anomaly. We don’t know where it came from or what it is, it just]] ''[[NothingIsScarier is.]]''
* Some of the details on the various dragons in the handbook are... less than pleasant. The illustrations, crude as they are, do ''not'' help.
-->'''Hiccup:''' Eats its victims... [[KillItWithFire burns its victims]]... [[BuriedAlive buries its victims]], chokes its victims, [[BreadEggsMilkSquick turns its victims inside-out]]... Kill on sight.
** As Hiccup reads further into the book, one may notice the dragon drawings [[TheFourthWallWillNotProtectYou moving as if they were about to pop out of the book]].
** In the same scene, we get a reminder of just how horrifying Night Furies are in this world. Since we've seen Hiccup bonding with Toothless all throughout the movie, we've forgotten that his kind are considered TheDreaded in-universe. And then we see a Night Fury's description in the handbook. [[NothingIsScarier Well, for a given value of "description" anyway, given that there isn't even a picture of it]]...
--->'''Hiccup:''' Night Fury. [[TheSpook Speed: Unknown. Size: Unknown.]] [[TheDreaded The unholy offspring of lightning and death itself. Never engage this dragon.]] [[RunOrDie Your only chance: hide and pray it does not find you]].

[[folder:Rest of the Film Franchise]]
* [[NightmareFuel/DragonsRidersOfBerk The TV Shows]]
* NightmareFuel/HowToTrainYourDragon2
* NightmareFuel/HowToTrainYourDragonTheHiddenWorld
[[/folder]]

[[WesternAnimation/HowToTrainYourDragon2 The sequel movie]] has its own page [[NightmareFuel/HowToTrainYourDragon2 here]], and [[WesternAnimation/HowToTrainYourDragonTheHiddenWorld the third movie]] has a page [[NightmareFuel/HowToTrainYourDragonTheHiddenWorld here]].

** The scene could serve as a trigger for those who suffered bullying, DomesticAbuse or AbusiveParents, because during it Snotlout is blaming Hiccup for being born, for making Snotlout act like a bully rather than a hero, and Hiccup is apologizing for it. That's right, Hiccup is apologizing for his cousin trying to kill him since they were young Hooligans. Where to start with the UnfortunateImplications?

** It comes ''very'' close to becoming a HeroKiller twice over, nearly crushing Fishlegs underfoot before being distracted by Snotlout hitting it in the eyes. Later on it comes within millimetres of [[EatenAlive swallowing Astrid and her Nadder whole]] through its VacuumMouth, stopped only by Toothless blasting it in the face. If either of them had been even a second slower, Fishlegs and Astrid would have been killed, plain and simple.

** The Red Death's design is pretty creepy. It's got MoreTeethThanTheOsmondFamily, [[ExtraEyes small, rheumy-looking eyes]], cracked/decayed-looking skin and a mouth like that of a theropod, on top of being covered in [[SpikesOfVillainy coral-like spikes]]. While all the dragons in the film have lots of teeth that are proportionately very big, along with the occasional disturbing design element, the Red Death's stand out more thanks to how huge it is and the UglyCute designs of the other Dragons.

* Alvin, [[BlatantLies the Peaceable But Honest Farmer]] (actually the Treacherous) giving Hiccup a fencing lesson towards the beginning of the book. A BaitTheDog moment or an attempt to see how tough his [[spoiler: archnemesis]] is?

* In a more realistic sense, as the epilogue lampshades, the idea of a culture where reading is forbidden, as is learning. Hiccup tries to write books, only for Stoick to confiscate them and claim no Haddock ever wrote books (Hiccup later finds out that his ancestor Hiccup II did write books). In the library, however, there are enough books to last a person several lifetimes. Worse, we don't know ''why'' reading is forbidden [[spoiler:for several books, until the Wodensfang revealed that Grimbeard did it to spite the little dragon and ignore his warnings]]. To get it to open, Hiccup has to ask for his father to reopen the library.

** On top of that, the grandmother [[spoiler: ''gives him the Slavemark'']] as a reminder of his bargain with them.

* Madguts's prize after "winning" the swimming competition: demand that Stoick and Bertha be sacrificed to the Sky Dragons, in addition to receiving the Hooligan and Bog Burglar lands. [[spoiler: Thank goodness Hiccup ended up being declared the winner instead...]]

* [[spoiler: The Red Death's [[JumpScare introduction]]. You hear it roar moments before its head erupts from the magma to casually swallow a Gronkle whole, visibly [[HorrifyingTheHorror causing all the other dragons to shrink away in fear]]. [[FromBadToWorse And then it smells Hiccup]], which causes it to start climbing up through the hive to get at him, off-handedly eating a Zippleback that didn't move in time]].

** And worst of all, [[spoiler:we know next to ''nothing'' about it. In both movies, and all 8 seasons of the TV show, we never find out anything else about the Red Death. It’s implied to be an alpha dragon but it doesn’t come from any known species, and we have no idea if there even are any other dragons like it. [[NothingIsScarier Even amongst mysterious dragons like the Screaming Death and the Night Fury, the Red Death is a complete anomaly. We don’t know where it came from or what it is, it just]] ''[[NothingIsScarier is.]]'' ]]

* The AdultFear in how the Romans easily snatch Hiccup and Fishleg from the classroom, because they catch Gobber by surprise and everyone else is too stunned to stop them.

* Stoick's AdultFear when Hiccup asks to go on the quest to find the potato and save Fishlegs's life. JerkassHasAPoint because while Fishlegs is important, Stoick doesn't want to risk his only son's life on a quest for an object that may not even exist. No wonder Stoick is furious when [[AngerBornOfWorry he realizes that Hiccup disobeyed him]].

** AdultFear for Chinhilda, Grimbeard's wife, when her husband takes away their runt baby to leave him on the hillside. He refuses to kill her when she attacks and begs to know where the baby is, so she rides off in a boat to find Hiccup II. [[TearJerker And never does.]]

* Valhallarama and Hiccup's duel in the woods, which becomes AdultFear for Val when she recognizes her son. Although the prose plays the realization for laughs with Toothless and the Wodensfang dropping a tree trunk on her head, it's a HarsherInHindsight moment that she didn't realize what was happening at home.

** Stoick and Val face their last massive AdultFear: just as they found out their son was alive, they have to let him go into one-on-one combat alone. Val with her BrutalHonesty can only remind Hiccup he has to rescue himself, while Stoick confesses that he wants to go in Hiccup's place.

* Hiccup in his first few scenes invokes AdultFear: Stoick pulls him out of passing dragonfire and yells at him for being outside during a raid. Then Hiccup disobeys those orders to test his dragon-trapper, which leads to a Monstrous Nightmare nearly burning him alive. As Stoick reveals, Hiccup does this on a ''regular basis''. What's worse is, from Stoick's annoyed reaction upon seeing the Monstrous Nightmare chasing his son, something that would give any parent a heart-attack, Stoick's ''getting used to this''.
* Gobber points out a large AdultFear: Stoick won't always be around to protect Hiccup. His son is growing up, and always running into danger. Stopping him isn't possible. The best Stoick can do is prepare him for it.

[[caption-width-right:350:"[[Myth/NorseMythology Odin]] help us."]]

* [[spoiler: The Red Death's [[JumpScare introduction]]. That poor, poor Gronckle...]]
** Lets not forget about the unlucky Hideous Zippleback that, too, got dragged down and eaten by the beast afterwards.

* Early in the movie, Stoick leads a few of the other Vikings in the tribe in three longboats to head to Helheim's Gate, which is [[OminousFog wreathed in fog with the only thing visible being three pillars of rock.]] However, once the Vikings head in, [[NothingIsScarier we get a brief glimpse at a Monstrous Nightmare illuminated by the fire of other dragons in the mist,before cutting away to the Deadly Nadder. Only one longboat returns to Berk. We don't get any explanation as to what happens to the other vikings, but we can assume most of them were killed in the skirmish.]]

** Not to mention seeing it ''spew'' waves of fire when it can't keep track of where Hiccup and Toothless are flying. When most of the other dragons have been shooting quick bursts of fire, watching the Red Death go ''ballistic'' and unleash a continuous stream of flames through the sky is just terrifying.
** Let's also not forget the [[MoreTeethThanTheOsmondFamily set of teeth]] it has. While all the dragons in the film have lots of teeth that are proportionately very big, the Red Death's stand out more thanks to how huge it is and that it has a mouth like a theropod.

* Some of the details on the various dragons in the handbook are... less than pleasant.
-->'''Hiccup:''' Eats its victims... burns its victims... buries its victims, chokes its victims, [[BreadEggsMilkSquick turns its victims inside-out]]... Kill on sight.

--->'''Hiccup:''' Night Fury. Speed: Unknown. Size: Unknown. The unholy offspring of lightning and death itself. [[RunOrDie Never engage this dragon. Your only chance: hide and pray it does not find you]].

* Hiccup in his first few scenes invokes AdultFear: Stoick pulls him out of passing dragonfire and yells at him for being outside during a raid. Then Hiccup disobeys those orders to test his dragon-trapper, which leads to a Monstrous Nightmare nearly burning him alive. As Stoick reveals, Hiccup does this on a ''regular basis''. What's worse is, from Stoick's annoyed reaction upon seeing the Monstrous Nightmare chasing his son, something that would give any parent a heart-attack, he's ''getting used to this''.

* Hiccup in his first few scenes invokes AdultFear: Stoick pulls him out of passing dragonfire and yells at him for being outside during a raid. Then Hiccup disobeys those orders to test his dragon-trapper, which leads to a Monstrous Nightmare nearly burning him alive. As Stoick reveals, Hiccup does this on a ''regular basis''.

** Admittedly, this plot point may allude to occurrences of child brutality within legitimate Scandinavian sagas, most notably ''[[Literature/EgilsSaga Egil's Saga]]'', which, if anything, make this scene, while nonetheless disturbing to a modern audience's sensibilities, seem considerably LighterAndSofter than its bases.

[[WesternAnimation/HowToTrainYourDragon2 The sequel]] has its own page [[NightmareFuel/HowToTrainYourDragon2 here]], and [[WesternAnimation/HowToTrainYourDragonTheHiddenWorld the third movie]] has a page [[NightmareFuel/HowToTrainYourDragonTheHiddenWorld here]].

* The Green Death ''[[spoiler:swallowing Hiccup alive]]''. Not to mention the Green Death calmly explaining to Hiccup that he's come in peace but will kill all the Vikings anyway. AffablyEvil at its finest.

[[folder: Book Series]]
!! How to Train Your Dragon

!! How to Be A Pirate

* Alvin [[spoiler: actually the Treacherous]] [[BlatantLies the Peaceable But Honest Farmer]] giving Hiccup a fencing lesson towards the beginning of the book. A BaitTheDog moment or an attempt to see how tough his [[spoiler: archnemesis]] is?
** Also how in the cave he switches from "nice" to FauxAffablyEvil when they find a door [[spoiler: to Grimbeard's real treasure. When Hiccup, injured with his right arm in a sling, tries to apply logic and point out that Grimbeard's trap will kill them all, Alvin presses the Stormblade into Hiccup's chest and threatens to kill him and Fishlegs, unless the door opens.]]
* The AloneWithThePsycho moment at the climax, when [[spoiler:Alvin tries to kill Hiccup on top of the treasure mounds. Even when Toothless finds a sword that Hiccup can wield, Hiccup nearly loses the battle.]]

** His coffin cut off Alvin's hand. Even if Alvin [[spoiler:is evil]] that is a gruesome trap.

** The [[spoiler: Strangulator in the underground cave. Tentacles made for strangling, and a poisonous needle.]]

* When the [[spoiler:Outcasts take over the Hooligan ship after the treasure is obtained]], they plan to put all of Berk into slavery. All except the Chief and his Heir; they are ''eaten''. [[spoiler:When Hiccup volunteers himself as the Heir, rather than let his father die alone, Alvin promises him that it will be over quickly.]]

!! How to Speak Dragonese

* The Venemous Vorpent, a dragon whose bite is fatal if not cured by a potato in several months. [[spoiler: Fishlegs is thought to be bitten, but Hiccup actually receives the bite.]]

!! How to Cheat A Dragon's Curse

** Some FridgeHorror hits him and the reader when [[spoiler: Hiccup was revealed as the Viking with Vorpentitis. If Hiccup hadn't gone on the quest, he would have ''died.'']]

!! How to Twist A Dragon's Tale
* Most of Humongous's [[spoiler: attempts to murder Hiccup even if he saves him at the last minute each time]]. The highlight has to be his last, where he stands over Hiccup's bed [[spoiler: debating whether or not to kill him]].
** His first one, [[spoiler: setting up Hiccup in an axe fight with Snotlout and giving Hiccup a wooden axe]] is a nice CallBack to How To Be a Pirate.

* Alvin [[spoiler: defeating Hiccup in their duel by tripping him and interrogating him about the [[{{MacGuffin}} Fire Stone.]]]] It's the moment where we realize that Hiccup is just a kid and Alvin is an adult, and PickOnSomeoneYourOwnSize is in effect.
!! A Hero's Guide to Deadly Dragons

* Madguts the Murderous. He doesn't speak and doesn't have to; if you steal from him [[spoiler:like Big Boobied Bertha did,]] the best you can hope for is slavery if he's in a good mood, and execution if he's in a bad mood.
* Hairy shoots Stoick in the chest while holding him and Bertha hostage. [[spoiler:If Stoick hadn't had Hiccup's handmade book in his tunic, he would have died.]]
* In a more realistic sense, as the epilogue lampshades, the idea of a culture where reading is forbidden, as is learning. Hiccup tries to write books, only for Stoick to confiscate them and claim no Haddock ever wrote books. (Hiccup later finds out that [[spoiler:his ancestor Hiccup II did write books]].) In the library, however, there are enough books to last a person several lifetimes. Worse, we don't know ''why'' reading is forbidden [[spoiler:for several books, until the Wodensfang revealed that Grimbeard did it to spite the little dragon and ignore his warnings]]. To get it to open, Hiccup has to ask for his father to reopen the library.

!! How to Ride A Dragon's Storm

!! How to Break A Dragon's Heart

* The witch [[spoiler:Excellinor, Alvin's mother]] in the tree. Even though she saves Toothless's life by removing all the inedible objects he's swallowed, she is definitely [[spoiler:evil, shown when she expresses her desire that Alvin will become king.]]
* Moments from the story of Hiccup Horrendous Haddock the Second

** Grimbeard the Ghastly [[spoiler:stabbing Hiccup II during a chess game and peaceful dragon demonstration, because Hiccup's brother Thugheart convinced his father that treachery would happen.]] While ''WesternAnimation/HowToTrainYourDragon'' is a story about forgiveness and second chances, [[spoiler:it's horrifying that Hiccup II begs Furious not to kill his father in turn, and more horrifying that the incident plus a few centuries in chains turned Furious into a WoobieDestroyerOfWorlds.]]
*** Thugheart insinuating [[spoiler:Hiccup II would lead a dragon rebellion to cover up Thugheart's actual rebellion.]] He was already Grimbeard's heir but was furious that Hiccup II was his father's favorite child. He [[spoiler:destroyed his family]] ''ForTheEvulz''.
*** The sheer unfairness that Hiccup II [[spoiler:got a stab in the heart for supposed treachery]] while Thugheart and his followers [[spoiler:got exile for genuine treachery]]. Sometimes you wonder if ThereIsAGod in this series, or if the Norse gods are just apathetic to Viking cruelty.

** The witch as she tells the story ''revels'' in the tragedy, and plans to [[spoiler:crown Alvin king]].
* The Dragon Furious [[spoiler:laying waste to the Isle of Berserk, as part of his revenge for being chained for thousands of years, and his promise to never let Hiccup reach adulthood.]]

!! How to Steal A Dragon's Sword

* All the Vikings except Fishlegs [[spoiler:turning their backs on Hiccup]].

!! How to Seize A Dragon's Jewel

** How Hiccup defeats it: [[spoiler:playing dead long enough for it to swallow him legs first, so that he can stab its brain, losing a toe in the process.]] ''Eughh''. He then limps through its labyrinth of tunnels to rescue Fishlegs.
* Valhallarama [[spoiler:kidnapping Hiccup the second time]], snatching him off Windwalker's back. For kids out there, it's a shocking moment when you think your parents are betraying you to the enemy.

!! How to Betray A Dragon's Hero
* The Guardians of Tomorrow [[spoiler:killing Ug and his followers in a matter of minutes because they tried to present fake Lost Things. It's not specified what happens, but afterward the Guardians don't leave a trace.]]

** Hiccup getting bitten [[spoiler: ''twice,'' in his left arm to boot. [[WorfHadTheFlu His]] [[OhCrap sword]] arm.]]
* Camicazi trapped in a dark place, and ''crying'' though Bog Burglars don't cry. NothingIsScarier till we see where she's locked: [[spoiler: a chained-up box]].
* Snotlout [[spoiler: betraying Hiccup to the witch, and the fallout for the two of them.]] Even for readers that see it coming, it's quite a kicker.
* The witch's plan to break Hiccup: [[spoiler: chain him up, drop him into the cold sea filled with carnivorous Winterfleshers (piranha-like dragons that would "certainly attack a chained child"), and bring him up to ask for his parents' hiding place. Either his spirit would break, the Winterfleshers would mangle him beyond repair, or the freezing ocean would kill him.]]. If not for Hiccup's [[spoiler: plan B]], he may not have survived the ColdBloodedTorture.
** Hiccup's lips are blue at the end of it, and he nearly succumbs to hypothermia after [[spoiler:escaping and rescuing Camicazi. Thank you for warming him up, Windwalker!]].
* Snotlout [[spoiler: dueling Hiccup after Hiccup has just drowned the Vampire Spydragon that bit his left arm.]] Normally Hiccup is the best swordsman in the Archipelago, but [[spoiler: the Spydragon bite leaves his left arm paralyzed an unusable for battle so he has to use his right arm. As a result, though Hiccup puts up a good fight, Snotlout defeats him and has him at swordpoint.]]

!! How to Fight A Dragon's Fury
* The Guardians of Tomorrow, and how they kill their victims. [[spoiler:They carry them up into the sky where the atmosphere thins, until their victims suffocate from the lack of oxygen.]]
* Shortly following the [[spoiler:AwesomeMomentOfCrowning, the Vikings go MassOhCrap when the witch points out that Hiccup still has to face Furious. And if Hiccup fails to make peace, then the humans and dragons will engage in an endless war.]]

* You'd think that when the Wodensfang made his deal [[spoiler:Furious]] that [[spoiler: Hiccup would go EtTuBrute. [[SugarWiki/HeartwarmingMoments No.]] Hiccup understands that the Wodensfang was trying to save him, and that he needs to bring the Jewel to bargain with Furious. OhCrap ensues instead for Hiccup, because the Dragon Jewel he has is a fake.]]
* Just when [[spoiler:Hiccup manages to talk sense into Furious, by tossing the real Dragon Jewel away (which was hidden in the lobster claw necklace]], Alvin spoils it by [[spoiler:taking the Jewel and breaking the temporary ceasefire.]] The ensuing fight kills many humans and dragons in their respective RedShirt armies.

[[folder: First Film]]

* [[spoiler: The Red Death, a dragon the size of a mountain, taking flight and ascending into the sky after Toothless and Hiccup. Having it emerge from the earth is terrifying enough, but seeing something that looks like the unholy spawn of Fenrir and Jörmungandr take to the air and disappear into the clouds can leave one awestruck. That's the point where the Vikings probably thought that [[{{Myth/NorseMythology}} Ragnarok has started and the world was about to break.]]]]
** [[spoiler: Not to mention seeing it ''spew'' waves of fire when it can't keep track of where Hiccup and Toothless are flying. When most of the other dragons have been shooting quick bursts of fire, watching the Red Death go ''ballistic'' and unleash a continuous stream of flames through the sky is just terrifying.]]
** [[spoiler: Lets also not forgot the [[MoreTeethThanTheOsmondFamily set of teeth]] it has. While all the dragons in the film have lots of teeth that are proportionately very big, the Red Death's stand out more thanks to how huge it is and that it has a mouth like a theropod]].

[[/folder]]

* Early in the movie, Stoick and the other Vikings in the tribe head to Helheim's Gate, which is [[OminousFog wreathed in fog with the only thing visible being three pillars of rock.]] However, once the Vikings head in, [[NothingIsScarier we get a brief glimpse at a Monstrous Nightmare illuminated by the fire of other dragons in the mist,before cutting away to the Deadly Nadder. We don't get any explanation as to what happens to the other vikings, but we can assume most of them were killed in the skirmish.]]

* [[spoiler: The Red Death, a dragon the size of a mountain, taking flight and ascending into the sky after Toothless and Hiccup. Having it emerge from the earth is terrifying enough, but seeing something that looks like the unholy spawn of Fenrir and Jörmungandr take to the air and disappear into the clouds left one awestruck. That's the point where the Vikings probably thought that [[{{Myth/NorseMythology}} Ragnarok has started and the world was about to break.]]]]
** [[spoiler: Not to mention seeing it breathe fire when it can't keep track of where Toothless is flying. When most of the other dragons have been shooting quick bursts of fire, watching the Red Death freak out and unleash this continuous stream of flames through the sky is just terrifying.]]

* The Green Death [[spoiler: SWALLOWING HICCUP ALIVE]]. Also the Green Death calmly explaining to Hiccup that he's come in peace but will kill all the Vikings anyway. AffablyEvil at its finest.

** His coffin cut off Alvin's hand. Even if Alvin [[spoiler: is evil]] that is a gruesome trap.
** The stinking crystals on the Isle of the Skullions, located inside the treasure chest. Skullions can't see or hear, but they can SMELL, and the smell is strong enough to [[OhCrap wake them up . . .]]

* The Skullions chasing down Hiccup, who's too small to outrun them and too scared to scream for help. Imagine being chased by creatures with long claws to cut your tendons, and who will hunt you through hollow tree trunks, with {{Eyeless Face}}s and snuffling sounds . . .Good thing [[PapaWolf Stoick]] noticed in time and saved his son.
* When the [[spoiler: Outcasts take over the Hooligan ship after the treasure is obtained]], they plan to put all of Berk into slavery. All except the Chief and his Heir; they are ''eaten''. [[spoiler:When Hiccup volunteers himself as the Heir, rather than let his father die alone, Alvin promises him that it will be over quickly.]]

* Stoick's AdultFear when Hiccup asks to go on the quest to find the potato and save Fishlegs's life. JerkassHasAPoint because while Fishlegs is important, Stoick doesn't want to risk his only son's life on a quest for an object that may not even exist. No wonder Stoick is furious when [[AngerBornOfWorry he realizes that Hiccup disobeyed him]]

* Madguts the Murderous. He doesn't speak and doesn't have to; if you steal from him [[spoiler: coughBigBoobiedBerthacough]] the best you can hope for is slavery if he's in a good mood, and execution if he's in a bad mood.

* When Madguts's dragons kidnap Hiccup, Camicazi and Fishlegs during the swimming race. Fishlegs can't swim well, so Hiccup is trying to keep him afloat. Then one by one they get dragged down into the deep . . .

* Madguts's prize after "winning" the swimming competition: demand that Stoick and Bertha be sacrificed to the Sky Dragons, in addition to receiving the Hooligan and Bog Burglar lands. [[spoiler: Thank goodness Hiccup ended up being declared the winner instead . . .]]

* The witch [[spoiler: Excellinor, Alvin's mother]] in the tree. Even though she saves Toothless's life by removing all the inedible objects he's swallowed, she is definitely [[spoiler: evil, shown when she expresses her desire that Alvin will become king.]]

** Grimbeard the Ghastly [[spoiler: stabbing Hiccup II during a chess game and peaceful dragon demonstration, because Hiccup's brother Thugheart convinced his father that treachery would happen.]] While ''WesternAnimation/HowToTrainYourDragon'' is a story about forgiveness and second chances, [[spoiler: it's horrifying that Hiccup II begs Furious not to kill his father in turn, and more horrifying that the incident plus a few centuries in chains turned Furious into a WoobieDestroyerOfWorlds.]]
*** Thugheart insinuating [[spoiler: Hiccup II would lead a dragon rebellion to cover up Thugheart's actual rebellion.]] He was already Grimbeard's heir but was furious that Hiccup II was his father's favorite child. He [[spoiler: destroyed his family]] ForTheEvulz
*** The sheer unfairness that Hiccup II [[spoiler: got a stab in the heart for supposed treachery]] while Thugheart and his followers [[spoiler: got exile for genuine treachery]]. Sometimes you wonder if ThereIsAGod in this series, or if the Norse gods are just apathetic to Viking cruelty.
** FridgeHorror about how Chucklehead, Grimbeard's only son to escape the drama, had to cope with how war and betrayal tore his family apart. ThereAreNoTherapists in Viking times, and he was tasked with being chief of small Berk. And worse, we never hear his story, probably because most Vikings can't write . . .
** The witch as she tells the story ''revels'' in the tragedy, and plans to [[spoiler: crown Alvin king]].
* The Dragon Furious [[spoiler: laying waste to the Isle of Berserk, as part of his revenge for being chained for thousands of years, and his promise to never let Hiccup reach adulthood.]]

* All the Vikings except Fishlegs [[spoiler: turning their backs on Hiccup]].

* The Beast under the sand, and how it eats its victims. Its a massive, serpentine dragon that lives beneath the sand of the amber slave-lands, and when the tide goes out exposing the sand, it hunts. It has EYES ON THE ENDS OF ITS FINGERS, which it uses to watch prey like a submarine watching ships with its periscope. It's first glimpsed in passing by fishlegs, who in a sandstorm, sees it watching him before it submerges. He's dragged under shortly after.
** How Hiccup defeats it: [[spoiler: playing dead long enough for it to swallow him legs first, so that he can stab its brain, losing a toe in the process.]] ''Eughh''. He then limps through its labyrinth of tunnels to rescue Fishlegs.
* Valhallarama [[spoiler: kidnapping Hiccup the second time]], snatching him off Windwalker's back. For kids out there, it's a shocking moment when you think your parents are betraying you to the enemy.

** Hiccup's lips are blue at the end of it, and he nearly succumbs to hypothermia after [[spoiler: escaping and rescuing Camicazi. Thank you for warming him up, Windwalker!]].

* [[spoiler: The Red Death's [[JumpScare introduction]]. You HAD to feel seriously sorry for that poor unfortunate Gronckle.]]

** [[spoiler: Lets also not forgot the things [[MoreTeethThanTheOsmondFamily teeth]]. While all the dragons in the film have lots of teeth that are proportionately very big, its stand out more thanks to how huge it is and that it has a mouth like a theropod]].
** The beast was summed up by Stoick the Vast, who had been established as a Badass among Badasses, in three simple words.

* Also some of the details on the various dragons in the handbook.
-->'''Hiccup:''' Eats its victims... burns its victims... buries its victims, chokes its victims, turns its victims inside-out... Kill on sight.
[[/folder]]

* See [[NightmareFuel/HowToTrainYourDragon2 here]] for the [[DarkerAndEdgier second movie]].
----

* The Beast under the sand, and how it eats its victims.
** How Hiccup defeats it: [[spoiler: playing dead long enough for it to swallow him legs first, so that he can stab its weak point, losing a toe in the process.]] ''Eughh''

* You'd think that when the Wodensfang made his deal [[spoiler:Furious]] that [[spoiler: Hiccup would go EtTuBrute. [[CrowningMomentOfHeartwarming No.]] Hiccup understands that the Wodensfang was trying to save him, and that he needs to bring the Jewel to bargain with Furious. OhCrap ensues instead for Hiccup, because the Dragon Jewel he has is a fake.]]

[[caption-width-right:350:"Odin help us."]]

* Early in the movie, Stoick and the other Vikings in the tribe head to Helheim's Gate, which is [[OminousFog wreathed in fog with the only thing visible being three pillars of rock.]] However, once the Vikings head in, [NothingIsScarier we get a brief glimpse at a Monstrous Nightmare illuminated by the fire of other dragons in the mist,before cutting away to the Deadly Nadder. We don't get any explanation as to what happens to the other vikings, but we can assume most of them were killed in the skirmish.]

* [[spoiler: The Red Death, a dragon the size of a very large hill, taking flight and ascending into the sky after Toothless and Hiccup. Having it emerge from the earth is terrifying enough, but seeing something that looks like the unholy spawn of Fenrir and Jörmungandr take to the air and disappear into the clouds left one awestruck. That's the point where the Vikings probably thought that [[{{Myth/NorseMythology}} Ragnarok has started and the world was about to break.]]]]

* If things had gone differently in their first encounter, either Hiccup would have cut out Toothless's heart or Toothless would have burned Hiccup to a critter. This makes their respective acts of mercy and developing bond more meaningful.

* When the [[spoiler: Outcasts take over the Hooligan ship after the treasure is obtained]], they plan to put all of Berk into slavery. All except the Chief and his Heir; they are ''eaten''. [[spoiler:When Hiccup volunteers himself

* In a more realistic sense, as the epilogue lampshades, the idea of a culture where reading is forbidden, as is learning. Hiccup tries to write books, only for Stoick to confiscate them and claim no Haddock ever wrote books. (Hiccup later finds out that [[spoiler:his ancestor II did write books]].) In the library, however, there are enough books to last a person several lifetimes. Worse, we don't know ''why'' reading is forbidden [[spoiler:for several books, until the Wodensfang revealed that Grimbeard did it to spite the little dragon and ignore his warnings]]. To get it to open, Hiccup has to ask for his father to reopen the library.

-->"WHERE IS MY TOOTH"

** Also how in the cave he switches from "nice" to FauxAffablyEvil when they find a door [[spoiler: to Grimbeard's real treasure.]]

* When the [[spoiler: Outcasts take over the Hooligan ship after the treasure is obtained]], they plan to put all of Berk into slavery. All except the Chief and his Heir; they are ''eaten''.

** -->"WHERE IS MY TOOTH"