Big Hero 6 Headcanons Part 1: Hiro!
Despite watching Aunt Cass cook for basically his whole life, he can't cook if his life depended on it
His teeth are all jinky because he had a chewing/biting habit as a kid that didn't but not quite let up in the present. Cass is planning on having him fitted with braces
He's actually the least spice tolerant person in the Nerd Gang (the face melting wings aren't even that hot, Hiro's just a wuss 😆)
Sometimes talks to Megabot like it's a real person
Heavy sleeper, especially when he's sick
Hiro had to be the one to try and explain to Baymax what a Rick Roll was, and Baymaxs response to learning this new information was to send one to LITERALLY EVERYONE IN HIROS CONTACTS
Absolute MENACE on April Fools Day, especially when Tadashi was still around. His best prank to date was convincing Cass (and half the Lucky Cat patrons) that Mochi could talk! He did this with a robotic copy that he talked through
Hiro "Alright, Pinhead, yer time is up" Hamada and Fred "Who you calling Pinhead" Fredrickson IV
He never said this out loud in "Obake Yashiki", but his phobia is thunder and lightning storms. It's not as bad now as it was when he was little, but it definitely got a little worse when Tadashi died
His favorite Glitch Productions show is Murder Drones. He was absolutely bummed when it ended, but he still sometimes gets merch when the funds allow it
He can't wait for Gaslight District to start airing new episodes
Post dental surgery, his IQ drops to a hilarious degree. No joke, after he got his wisdom teeth taken out, he started actually WEEPING when he was informed that he had a cat at home ("Oooh my goooOOOOOOOssshhh I LOOOOOVE CATSH!!!")
When he and Tadashi were younger, Cass decided to rent "Watership Down" for them thinking it was just a cute storybook style movie about rabbits. You can imagine how well that went down (they slept in her bed with her for a solid two weeks)
Most definitely autistic, but also just has sensory processing issues in general, especially after so many superhero missions
Would die before admitting this, but on particularly bad days, he'll ask Baymax to just...pick him up and hold him there. It's relaxing, but embarrassing. Even Cass doesn't know he does this (she totally knows because she's caught him asleep in Baymaxs arms a few times, she just pretends not to know)
One lighter note, he has a soft spot for 2000s punk rock that you'd hear at the beginning of any Disney Channel movie around that time. He's not sure why
Quotes stupid media with his friends all the time. The one time Judy actually finished a movie quote with him was the day they became work besties
He can watch horror movies no problem, he's just not a big fan of them. One thing he physically can't handle seeing on screen is embarrassment humor or cringe humor