Hirozilla

Hirozilla is the slash ship between Fred and Hiro Hamada from the Big Hero 6 fandom.

Film
Hiro first met Fred at San Fransokyo Institute of Technology, where he gave Hiro a little scar, as Fred was wearing his mascot outfit at the time, before reassuring Hiro that he is a guy in a lizard-like suit and it is not his "real face and body". Fred is friends with Hiro's older brother Tadashi and after he was killed in a fire, Fred and the rest of their friends, Go Go Tomago, Honey Lemon and Wasabi try to be there for Hiro, where Fred tells him in a video call that he would ask for a superpower that would allow him to got through the screen so he could give Hiro a hug, but the young Hamada kept pushing him and the others away. Until they all encountered Yokai, masked supervillain, at the docks, who chases them throughout the city until Wasabi's car ends up in the bay with them still in it. Thanks to Baymax, Hiro, Fred and the others were able to make it back to the surface and after Hiro says that they need to find a place to recover at, Fred takes them to his house. Where Hiro shows Fred and the others the bird symbol he saw on the large object Yokai was carrying into the bocks, before Fred hands Hiro a comic book about a villain to help Hiro and the others to see the pattern that is connected to his theory of Alistair Krei being the man behind the mask. Even though the others couldn't see it, Hiro believes that Fred was onto something, since Yokai has stolen his microbots and Krei had wanted them for his company. Fred becomes exited as Hiro asks him and the others to form a superhero team in order to being Yokai to justice, for Tadashi.

Hiro spends sometime with Fred as he builds Fred a suit that allows him to become a fire breathing lizard, that can do super jumps that Fred loves. After they tested their new gear and Baymax fond Yokai's location, Hiro, Fred and the others go to face him.

TV Series
After the team saved the city and Go Go, Wasabi and Honey Lemon wanted to go back to their normal lives, Fred turns to Hiro in hopes that he'll be able to convince the others to continue Big Hero 6, where he catches him trying to break into Grandville's office. So he could get her strange paperweight, since Yama is holding Baymax's body "hostage" and was told that he'll get it back if he steals the paperweight for him. Even thuogh Fred didn't like the idea of Hiro stealing, he agrees to help him get Baymax's body back and to make sure that they'll be able to bring the paperweight back with them.

In "Muirahara Woods", Hiro, Fred and Baymax follow Go Go to see what she is up to, all while being unaware of the danger that their robotic friend is in unstill it was too late. Shortly after the two realize that technology is useless in the forest and had gotten themselves separated from Baymax, they wonder around the forest to see if they could find their robotic friend before becoming lost and nearly getting attacked by a bear if it wasn't for Ned Ludd, who saved them. Once they knew that they are safe with Ned, who only wants to keep the forest safe, and what is the cause of their teach problem the two boys ask him if he can help them find their friend, Ned agrees but when realized that Baymax is a robot he traps the boys in a net so he can throw Baymax off a cliff. Thanks to their three other friends who freed them from the net before coming up with a away to save Baymax, Fred helps Hiro to test their traps and forest made gear for Ned and share a high-five with each other once they knew that their rescue plan will work.

Fanon
Hirozilla is one of the less popular ships in the Big Hero 6 fandom. Many fans see them as a platonic friendship instead of lovers. Even when there are times where Fred serves as Hiro's confidant and guild, for when it comes to the world of superheroes, their code and other pieces of fact that can be a bit childish and nerdy at times.

On AO3, the ship has over 6 pieces of written work, while fanfiction.net has 93 with only 3 placed under pairing in its Big Hero 6 category.

Fandom
FAN FICTION
 * Fred/Hiro tag on FanFiction.Net
 * Fred/Hiro tag on FanFiction.Net