Baymax is a fictional superhero character 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 (September 1998). 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, butl