Gogo X Hiro Novels & Stories

Welp, the first place I'd poke around for that specific crossover has to be Archive of Our Own. AO3's tagging system is honestly unbeatable for this kind of hunt. You can literally filter by crossing 'Big Hero 6' with anything, then comb through the Hiro/GoGo tag, or even the Tadashi/Hiro tag if you're brave.

I've found some really clever ones where writers explore what would've happened if Tadashi never... y'know... and GoGo steps into that mentor-ish role for Hiro in a different way. The platform's not perfect—finding the good ones is still a slog—but the specificity you can get is wild. Just be prepared to wade through a sea of incomplete WIPs and maybe some weird AUs.

My bookmark folder is full of gems from there, though. Always sort by kudos after you set your filters.

Honestly, the 'enemies/rivals to reluctant allies to something more' pipeline is basically the backbone for most of the Gogo/Hiro stuff I've stumbled across. It writes itself, right? You've got this kinetic, impulsive, streetwise brawler and this methodical, brilliant, initially reserved tech genius. The friction from their different approaches to problems—Gogo's instinctive versus Hiro's calculated—creates a perfect storm for bickering that slowly morphs into a deeper, grudging respect. Then someone gets injured protecting the other, and boom, feelings realization. I've also noticed a weirdly specific sub-trope where Gogo, post-Big Hero 6, struggles with the loss of her 'death-defying thrill' high, and Hiro becomes her new, safer adrenaline rush through brainstorming crazy tech stunts together. It flips their dynamic on its head in a way that feels authentic to their characters.

Another huge one is the 'found family' trope, but with a focus on Hiro integrating into the Wasabi/Fred/Honey Lemon friend group through Gogo. She's his in, the one who initially tolerates him the least but ends up being his fiercest defender when the others might baby him. A lot of fics use her as a bridge between his new superhero life and a more grounded social circle, which is a neat twist on the usual team-as-family setup. And of course, age-gap is a constant quiet undercurrent, not necessarily in a creepy way, but more about the maturity gap. Fics often explore Gogo grappling with her attraction to someone younger but mentally on her level, while Hiro has to prove he's not just a kid with a robot. It's less about the number and more about them meeting in the middle, emotionally.

Gogo/Hiro? Honestly, I think a lot of the appeal comes from exploring a dynamic the movie itself barely touched. They had that one big 'I'm her friend, too' moment, and the fandom ran with it. The most common storyline I see is a post-canon 'slow burn' where Hiro, now older and maybe a little less reckless, and Gogo, still her intense self, reconnect at SFIT or through Baymax upgrades. It often deals with him finally seeing her as more than just his brother's friend, while she learns to let her guard down. You get a lot of fluff about him designing modifications for her discs, or angstier stuff about them processing Tadashi's loss together in a way they couldn't when they were younger.

A less common but super interesting angle is a roleswap AU. What if Gogo had been Tadashi's lab partner instead? Or a 'soulmate' or soulmark AU where they're inexplicably linked—imagine Gogo's pragmatic annoyance at having a fated connection to this teenage genius. Crossovers with other tech-based universes, like 'Iron Man' or even 'Cyberpunk 2077', also pop up, usually casting them as a hacker/engineer duo taking on corrupt corporations.

The sheer volume isn't like the biggest ships out there, which keeps the quality weirdly high sometimes. People writing it seem genuinely invested in making their personalities mesh, rather than just forcing them together. I stumbled on one where they were rival mechanics in a post-apocalyptic setting, and the banter was so sharp it completely sold me on the pairing.