RotG || BH6 || HTTYD || HiJack || Rise of the Big Hero 7 || HiJack || HTTYD || BH6 || RotG

Title: Rise of the Big Hero 7 – Jack Frost and the Guardians

Fandom: Disney/DreamWorks

Disclaimer: All rights concerning the movies reserved to DreamWorks/Disney respectively. 'Guardians of Childhood' is property of William Joyce. 'How To Train Your Dragon' is property of Cressida Cowell. This fanfiction on the other hand is entirely mine. No money is made with this, though reviews are more than welcomed.

Warnings: slash, superhero AU (Big Hero 6-verse), fluff, pining, hurt/comfort, [more tags to follow later]

Main Pairing: Hiccup/Jack

Side Pairings: Jamie/Hiro, Merida/Moana, Atali/Ruffnut, Fishlegs/Heather, Eret/Astrid, Snotlout/Minden, Dagur/Mala, Flynn/Rapunzel, Stoick/Cass, Nick/Toothiana

DreamWorks Characters: Jackson Overland | Jack Frost, Hiccup Horrendous Haddock III, Toothless, Stoick the Vast, Gobber the Belch, Nicholas Saint North, Toothiana, Mary Overland, Sophie Bennett, Jamie Bennett, Fishlegs Ingerman, Snotlout Jorgenson, Tuffnut Thorston, Ruffnut Thorston, Astrid Hofferson, Heather, Dagur, Mala, Atali, Minden, Eret Eretson

Disney Characters: Merida DunBroch, Moana Waialiki, Rapunzel Corona, Eugene Fitzherbert | Flynn Rider, Hiro Hamada Cass Hamada, Baymax, Fred Frederickson IV | Fredzilla, GoGo Tamago, Honey Lemon, Wasabi No-Ginger, Tadashi Hamada

Summary: Cass Hamada and Stoick Haddock are married and Hiccup grew up with his stepbrothers Tadashi and Hiro. When Tadashi dies, Hiccup is right there at Hiro's side. But when Big Hero 7 rise, they are by far not the only superheroes in San Fransokyo – because Jack Frost, a well-known and respected elemental metahuman superhero – apparently relocated to San Fransokyo.

At SFIT, Callaghan is replaced by genuius inventor Nick St. North, who recently moved to San Fransokyo with his wife, niece and his nephew - Jackson Overland.

Rise of the Big Hero 7

Jack Frost and the Guardians

Prologue: The Death of Tadashi Hamada

Hiro Hamada had barely any memories of his parents. They had died when he was three, eleven years ago. The only parent Hiro had ever known was his aunt Cass. And now Stoick Haddock.

Aunt Cass, who had taken Hiro and his big brother Tadashi in after their parents' death, had been dating the widower for a couple of years now. Secretly at first, so the children wouldn't grow attached in case the relationship broke apart. But Stoick, contrary to his name, could be quite tender and loving. Months after aunt Cass told the boys, the Haddocks had moved in with the Hamadas.

The Haddocks were living in the Scandinavian quarter of San Fransokyo – Berk. Stoick was a large, intimidating man with wild, thick red hair and a bushy beard. He was the single parent to a scrawny boy named Hiccup, a brunette with freckles all over his face. Shy and unassuming.

Only that all of that laid five years in the past and Hiccup had grown into a strong, lean boy, who had gained confidence through his inventions. He was a very talented boy and now at seventeen, he already attended SFIT together with the older Hamada-brother. Tadashi was eager to have a little brother who actually looked up to him – unlike his stubborn little Hiro. Hiro didn't mind. As long as Tadashi and Hiccup were busy with their studies, they couldn't annoy him about his bot fights.

Hiro Hamada was as much a genius as Hiccup and Tadashi, but unlike them, Hiro liked to put his talent to good use with illegal bot fights to make fast money.

"What are we going to do with that boy?", sighed Stoick exhausted as he looked at Cass.

Him and Cass were sitting at the kitchen table, Cass eating her frustration away in the form of cupcakes while Stoick was running his large hands over his face. Cass huffed without a word, stuffing the last remains of her cupcake into her mouth, lower lip quivering. The two had just come back from bailing their three boys out of prison. While Tadashi had followed Hiro to his room, Hiccup had lingered some to listen in on their parents. Frowning concerned, he went upstairs to Hiro's room. His dad was right, they needed to do something about Hiro. Granted, Hiccup could relate – being a child genius put them aside from others, isolated them. But Hiccup had managed to channel that genius and put it to good use, while Hiro was still lost. For Hiccup, Tadashi had been like a homing beacon to follow and SFIT had been the safe habor.

"...You're going to another bot fight", said Tadashi just as Hiccup entered the room.

Tadashi and Hiccup exchanged a short look. A plan formed in their minds and they took Hiro with them. Not to the bot fight though. Fifteen minutes later and the three Haddock-Hamada brothers were in the technology department of SFIT, Hiro unwilling so.

"I just need to get something", promised Tadashi.

"I'm not interested in your nerd school", sighed Hiro stubbornly.

But Hiccup just grinned and pushed him from behind. Everyone was still there, in their science cave. Then again, they barely left their lair before midnight anyway. There was GoGo, still working on her bike, Honey Lemon doused in the pink powdery remains of yet another ball of metal, Wasabi cutting apples with his lasers and Fishlegs, well, Fishlegs was busy with his and Hiccup's project.

"What... is that...?", whispered Hiro in awe as he was pushed into the lab.

"I'm Fishlegs. Hi", greeted Fishlegs with a grin.

"I think he meant the dragon-shaped robot you're laying beneath", pointed GoGo out.

She rolled her eyes while Honey Lemon giggled amused. Fishlegs crawled out from beneath the dragon-shaped robot and Hiccup posed in front of it, looking rather proud.

"That is Toothless. Fishlegs and I are building him", declared Hiccup proudly, activating the robot.

Green lights flashed on in the robot's eyes and the black, sleek metal-dragon started moving. It was rather obvious that he was programmed with the movements of a cat in mind, but somehow even that was awesome to Hiro. While Toothless continued nudging his hand and getting patted by Hiro as though the robot really was a cat, Hiro also got acquainted with Baymax, Tadashi's pride and joy.

"These are... amazing", whispered Hiro in total awe.

On their way out, they met Professor Callaghan and Hiccup had the feeling that meeting his idol in person was the last push that Hiro needed to agree to attending the university. Behind Hiro's back, Tadashi and Hiccup fist-bumped in silent victory before they headed back home. They had reached their goal. Hiro was going to be one of them. He was going to attend the SFIT. No more bot fights. That boy genius was going to channel his brilliant mind into something productive from now on.

/break\

Hiro had basically moved into the lab to get his project done once he got started on it, the one thing he would do that would blow Callaghan's mind to get an acceptance letter to SFIT. Everyone around him was more than eager to help. Tadashi, Hiccup and Fishlegs didn't mind sharing their private lab with the younger boy and both Toothless and Baymax seemed to have grown fond of Hiro.

"Come out, boys. Time to get some food in", interrupted Heather, Fishlegs' girlfriend.

The dark-haired girl smiled as she walked over to kiss Fishlegs on the cheek. Fishlegs grinned in a dopey way and smiled brightly. The two really were an odd couple, but both were enthusiastic, bright and bubbly, so they were also quite a good match. Heather attended the sports-college not far away from SFIT, together with most of Fishlegs and Hiccup's friends. Hiro and Hiccup giggled and exchanged a teasing look as they always did when Heather and Fishlegs were being cute.

"You two are such children", stated Tadashi fondly, clapping both his brothers on the shoulders.

Wasabi and GoGo were already sitting in the bigger lab, together with Fred. Hiccup and Tadashi's nerd-friends. Hiro had found it surprisingly easy to find his place among them.

"Hiro!", exclaimed Fred enthusiastically. "You gotta settle our argument!"

Hiro made a face as he was dragged into the middle of another one of the comic-related arguments between Fred and GoGo (if you could call them arguments, considering that GoGo had little interest in the topic at hand and was mainly arguing the physics of things... which... were not actually up to debate, regardless of how often Fred claimed that 'comic physics are different'). Hiccup grinned broadly and sat down next to his best friend Fishlegs. Tadashi was engaged in a discussion with Honey and Wasabi. Hiccup observed them fondly for a moment. He enjoyed this little group of misfits, it was the first place where he felt truly accepted, like he was part of something. He was immensely grateful to have this new family. His father had opened up since he had gotten together with Cass and Hiccup had always wanted siblings – brothers who were as clever as him, at that.

/break\

"I'm so proud of you!", exclaimed Cass loudly and happily, hugging Hiro tightly.

"We both are", added Stoick, placing a large, heavy hand on Hiro's head, ruffling his hair.

Hiro's face was flushed and his smile nearly split his face. While Cass hoarded everyone into the direction of their restaurant, the three brothers stayed back and enjoyed the afterglow of success.

It had been an exciting and exhausting evening, but the months of work leading up to it had truly paid off. Never had Hiro been this proud of himself before. The applause, the admiration, the way Cass and Stoick and Tadashi and Hiccup had looked at him when he had shown off his project. How filled with pride Professor Callaghan had been too.

"I'm glad you'll officially join our nerd lab", whispered Hiccup with a teasing grin.

"I knew you could do it, Hiro", smiled Tadashi, nudging his little brother.

But before Hiro could reply anything, a fire erupted in the hall. The three boys froze and stared in shock. Both Hiccup and Hiro reached out to stop Tadashi as their older brother made a move to run inside. Hiro's eyes were large and concerned, not understanding where Tadashi was going to do.

"Professor Callaghan is still inside", stated Tadashi with determination.

"So? What good does it do if you run after him and die too?", asked Hiro a bit harshly.

"It's too dangerous", added Hiccup worried. "You wouldn't stand a chance."

Tadashi looked desperate, but there was no stopping him and Hiro and Hiccup were forced to watch as the fire grew and consumed Tadashi, not giving him a chance to return.

/break\

The mood in the café was damp and dar, even though it was supposed to be a time of celebrations because of Hiro's acceptance to university. But the deaths of Tadashi and also Professor Callaghan weighed heavy on them. Tadashi had run back to save the professor, yet instead both were dead. Cass was crying into Stoick's shoulder, Hiccup sat overwhelmed and confused on the stairs, surrounded by his best friends. Hiro, he had not left his bedroom since the funeral.

"Hiccup, I... I am so sorry", whispered Astrid, squeezing his shoulder.

After Fishlegs, she had been his oldest friend. They had known each other since diapers and while not a genius inventor, she was attending the sports-college with Heather – she was how they had met Heather for the first time. Hiccup looked up at her, but... he didn't know what to say. He didn't even know what to feel. What was he supposed to do now, with himself and with Hiro...?


Author's note: First chapter, mainly just introductions. Next chapter, some more introductions because Professor Saint North will be introduced as Callaghan's replacement and then there will be heroes. ;)

Now, you can find this story, like all other of my ongoing stories, on my updating schedule on my profile to check when it will next be updated!

Also, this story was mainly prompted by me making HiJack GIFs over on tumblr and the visualization of this AU made me REALLY want to finally write it! So, come visit me over on tumblr at takaraphoenix! ^^