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Broken Promise by mrbuisiness
Fandoms: How to Train Your Dragon (Animated Movies), DreamWorks Dragons (Cartoon)
25 Oct 2025
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Hallowtober - Day 24: Break
Dagur decides to be benevolent to his beloved captive, Hiccup. It is his birthday, after all, and he's allowed one wish.
Hiccup asks Dagur to let him write a letter to home, to Berk and all of his friends and family, to his dragon. It's been weeks since he's seen them, and he's not sure he ever will again.
Dagur intends to allow it. But not until after he's gotten his fun.
Series
- Part 24 of Hallowtober - 2025
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First Date by Emachinescat
Fandoms: How to Train Your Dragon (Animated Movies), DreamWorks Dragons (Cartoon)
23 Oct 2025
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Summary
The Zippleback Experience AU: Dagur gets fifteen minutes alone with Hiccup to "soften him up" for Ryker's interrogation. He's more interested in spending quality time with Hiccup than he is in getting answers, but he's an adaptable Viking. He decides to kill two dragons with one catapult: Have his "first date" with a chained and helpless Hiccup, and terrify him into cooperating at the same time.
Written for AILESS Whumptober Day 23: Restraints, Obsession, "Aren't you feisty?"
Series
- Part 23 of AILESS Whumptober 2025
- Part 1 of Quality Time
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Comes to Bite by mrbuisiness
Fandoms: How to Train Your Dragon (Animated Movies), DreamWorks Dragons (Cartoon)
17 Oct 2025
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Hallowtober - Day 16: Bite
Trying to do the right thing, Hiccup decides to help Dagur learn how to ride a dragon. Surprisingly, it goes pretty well, well enough that as night falls, the two manage to relax and drink together.
Dagur doesn't ask permission before making his move.
Series
- Part 16 of Hallowtober - 2025
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Family Matters by mrbuisiness
Fandoms: How to Train Your Dragon (Animated Movies), DreamWorks Dragons (Cartoon)
08 Oct 2025
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Hallowtober - Day 8: Nightmares
After several years of relentless trying, Heather and Dagur, the king and queen of Berserk, find themselves forced to admit that the queen won't be able to continue their bloodline, and carry their heir for them.
Fortunately, fate has blessed them with another sibling capable of carrying that successor for them.
Hiccup. And they have something he wants, desperately.
Or rather, someone.
Series
- Part 8 of Hallowtober - 2025
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Summary
As the latest Dragon training begins, Viggo and his people arrive on Berk to help hunt for the nest. Their delayed arrival was because of a storm and so they stayed to help with the training. Viggo is a little surprised to find a teenager smaller than the others with others in training. One who would disappear right after training and only appear for dinner.
Then the boy started doing significantly better than the others. Trying to follow him ended up with Viggo losing him more than once. Then the boy would suddenly be gone and no one seemed to know where. Then whispers about missing supplies. It wasn't much it was happening regularly. At first, it was just food, fish and bread, but then tools, herbs and bandages, blankets, and clothes. The other Vikings paid no attention, but Viggo recognized someone was preparing to runaway. He had a feeling he knew who.
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Curse of the Lycanthrope by CourtesyTrefflin, RivanaRita for Sinvulkt (Wakare)
Fandoms: How to Train Your Dragon (Animated Movies)
31 Jul 2025
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Hiccup is bitten by a Lycanthrope… and the next thing he knows, he finds himself as a dragon, wondering the caves of Berk as Dagur’s next attack closes.
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Stepping Through Time by AminaGila, CourtesyTrefflin for RivanaRita
Fandoms: How to Train Your Dragon (Animated Movies)
30 Jul 2025
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Hiccup always looks forward to the yearly treaty signing and this year is no different. But something is… wrong with Dagur. He’s changed, and Hiccup has no idea why.
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Tempest Untamed by AminaGila, CourtesyTrefflin for TiranaSorki
Fandoms: How to Train Your Dragon (Animated Movies)
30 Jul 2025
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Rumor has it that the Red Death was defeated by people from Berk, but Stoick was tight-lipped about the whole thing. Determined to find the truth for himself, Dagur sets out for Dragon Island.
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Lies and Survival by CourtesyTrefflin, TiranaSorki for RivanaRita
Fandoms: How to Train Your Dragon (Animated Movies), DreamWorks Dragons (Cartoon)
30 Jul 2025
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Hiccup is captured by Alvin longer and his friends aren’t able to find him. When he does get away, he crashes on Dragon Island… and runs into Dagur. Dagur isn’t expecting to run into an injured Hiccup there, but he’s pretty there’s a growing list of things he’s lying about, starting with why he can hardly walk.
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what a wicked thing to do (to make me dream of you) by BreakTheStars
Fandoms: How to Train Your Dragon (Animated Movies)
13 Jul 2025
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She had been warned about people like him her whole life—someone who charged headfirst into chaos, solved problems with a blade, and laughed through the blood. So when she is forced to keep an eye on Dagur the Deranged, things get a bit tricky.
What she’s not ready for is… enjoying his company.
Or his smile. Or his insane laugh. Or his goddamn trebuchet-building hands.
Or the way he looks at her.Now he’s everywhere: in her head, at her side, in her space, and she can't get rid of him.
Series
- Part 1 of The Deranged and the Devoted
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Never Wanted This by mrbuisiness
Fandoms: How to Train Your Dragon (Animated Movies), DreamWorks Dragons (Cartoon)
06 May 2025
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Summary
Dagur tries to remind Hiccup who he belongs to.
Series
- Part 5 of Soul Bound
- Part 1 of Tumblr Whump Requests
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On the Edge (Of Your Blade) by BreakTheStars
Fandoms: How to Train Your Dragon (Animated Movies)
20 Apr 2025
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Dagur the Deranged has joined the Riders. Hiccup says he’s changed. You say he’s one knife away from a relapse.
You don’t trust him. Not with your team. Not with your dragon. And definitely not with the way he looks at you—like you’re his next conquest or his next kill. You haven’t decided which one would be worse.
You're a dagger-wielding, dragon-riding, combat-trained nightmare. He’s a feral ex-warlord with boundary issues and a laugh that could raise the dead.
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And from mine blood, fire shall come by CarnalNati0ns
Fandoms: How to Train Your Dragon (Movies), Hiccup Series - Cressida Cowell
19 Feb 2025
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The Isle of Berk, found in the Barbaric archipelago, had been branded many names, Isle of Ice, Niflheim come life, The Land of Death, Land of Despair. It had not always been as such, a thousand years ago, it was beautiful, with springs that lasted seven months, and winters that lasted five; in spite of the dragons that always swarmed the Island, ignoring the other isles in the Barbaric archipelago. However, it all became ice, death and despair, the day Hiccup Horrendous Haddock I killed the very last dragons.
A thousand years later, Hiccup Horrendous Haddock III is dressed in a red gown, his father's cape clasped over his shoulders with a gold dragon cloak clasp, his auburn hair was being brushed as his green eyes filled with tears, which he forced down, unwilling to cry and allow anyone to see him broken.
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Soulmates by mrbuisiness
Fandoms: How to Train Your Dragon (Animated Movies), DreamWorks Dragons (Cartoon)
15 Feb 2025
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httyd smut week - day 1
Wanting to be as close to Hiccup as possible, Dagur ties them together. He doesn't ask how Hiccup feels about this.
Series
- Part 4 of Soul Bound
- Part 1 of httyd smut week
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Summary
Obviously they are reacting to the movie, but I have altered and added some scenes because you can not tell me that the movies show everything they imply. That's where the additions come in.
I obviously do not own How to train your dragon, because if I did it would have been slightly different.
Series
- Part 1 of Watching Httyd but different
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Choice and Punishment by mrbuisiness
Fandoms: How to Train Your Dragon (Movies), DreamWorks Dragons (Cartoon)
04 Jan 2025
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Whumptober - Day 3
"You have a choice here, Hiccup. You can keep making things difficult for yourself, or you can just listen to me. Like you're supposed to!" Dagur poked at his brand through his tunic, pulling a hiss of pain from Hiccup, who glared at him.
"I own you. Why don't you get that?!"
Series
- Part 3 of Soul Bound
- Part 2 of Whumpuary - 2025
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This Will Hurt by mrbuisiness
Fandoms: How to Train Your Dragon (Movies), DreamWorks Dragons (Cartoon)
01 Jan 2025
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Whumpuary - Day 1
"Dagur- no, you don't have to do this. You- you don't have to- you don't have to do this to me," Hiccup gasped, pleading with all but his words for Dagur to please, reconsider. This was too far, even for him.
"Oh, but I do, Hiccup," Dagur said, "How else am I supposed to prove to everyone else that you belong to me?"
Series
- Part 2 of Soul Bound
- Part 1 of Whumpuary - 2025
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Mine, Alone by mrbuisiness
Fandoms: How to Train Your Dragon (Movies), DreamWorks Dragons (Cartoon)
25 Dec 2024
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"Hiccup... my perfect Hiccup..." Dagur whispered, trailing a hand along Hiccup's jaw. "We're meant for each other. Don't you feel it?" Dagur pressed a hand against Hiccup's chest, heart beating thunderously beneath his palm, "In here?"
Series
- Part 1 of Soul Bound
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Summary
Berk is attacked by a mysterious alliance of northern vikings and Berk is practically deccimated. The only place to flee is Berserkyr Island, where they have allies. The Berkians and Hiccup specifically can't escape from the northern invaders for long though. Not when Hiccup could be such a useful tool for someone like Drago, even though she doesn't know it. Yet.
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Betrothed; The re-write by Last_Present
Fandoms: DreamWorks Dragons (Cartoon), How to Train Your Dragon (Movies)
25 Jun 2022
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Summary
So like the original Betrothed,
The reader is 15, just about to turn 16. Hiccup is obviously the same age and Dagur is 18, just about to turn 19.I based his age off what I’ve read online with people speculating his age, and also based the betrothal age off what real Vikings would have been married at. Although, real Vikings got married at ages as young as 12 and we’re just not going to do that are we.
Also, your dragon is still a changewing, but I changed its name to something more Viking-ish, because I figure Abscon isn’t a very ‘How to Train your Dragon’ sort of name in relation to Hookfang, Skullcrusher etc.
Also just as a last note, I’m not sure if I ever made it clear in the original book but reader and Hiccup are not meant to be twins. I originally intended reader to be at least 11 months older than Hiccup but scrapped this when I realised, I’d have to rearrange the ages of betrothal and stuff.
Also, please be kind! This is my first time using AO3's format to write something.
Series
- Part 1 of Dagur x reader re-write series