Baymax is a fictional character, a superhero appearing in American comic books published by Marvel Comics. Created by Steven T. Seagle and Duncan Rouleau, Baymax first appeared in Sunfire & Big Hero 6 #1. Baymax begins his existence as Hiro Takachiho's science project. Originally designed to be a hydro-powered robotic synthformer programmed to serve as Hiro's personal bodyguard, butler, and chauffeur, Baymax becomes Hiro's best friend and father figure when the young inventor programs his recently deceased father's brain engrams into Baymax's artificial intelligence. When the Giri recruits Hiro into the fledgling super-team Big Hero 6, Baymax also joins the team, where his phenomenal strength, amazing surveillance, and data analysis capabilities have proven useful.