Baymax

In Big Hero 6, Baymax is voiced by Scott Adsit.[6][7] This version is a white inflatable robot with a carbon fiber skeleton built by Hiro Hamada's older brother Tadashi to serve as a personal health care provider companion. Co-director Don Hall said "Baymax views the world from one perspective—he just wants to help people, he sees Hiro as his patient." Producer Roy Conli said "The fact that his character is a robot limits how you can emote, but Scott was hilarious. He took those boundaries and was able to shape the language in a way that makes you feel Baymax’s emotion and sense of humor. Scott was able to relay just how much Baymax cares."[7][8][9] The film was released under the title Baymax in Germany and Japan.[10] Baymax's design in the film drew influence from Japanese anime and Shogun Warriors toys.[11] Mecha designer Shigeto Koyama, who previously did design work for mecha anime such as Gunbuster 2, Eureka Seven, Gurren Lagann and Rebuild of Evangelion, worked on the concept design for Baymax in the film.[12][13]

Baymax is immediately activated from his charging bay at the sound of a person experiencing pain, which can often lead to unnecessary responses as he cannot distinguish genuine calls for distress from simple exclamations and euphemisms. Due to being a personal "healthcare companion" Baymax is calm and nurturing, thanks to the chip engineered by Tadashi, which contains "10,000 different medical procedures". Up to 4 chips can work in conjunction to empower him and shape his attributes. Hiro later designs a combat chip that instructs him on numerous forms of martial arts, so Baymax is not left defenseless if the need arises. It is shown that if Baymax is left alone with this, he becomes a lethal force. To coat his fragile and inflatable body, Baymax wears bright red armor with purple accents. The suit has wings and boosters for flight, as well as detachable rocket fists for combat and utility. Baymax's armor also has small magnets attached to his back that allow Hiro to stick to him in flight. At the end of the movie, Baymax remains behind in the portal, sacrificing himself to save Hiro and embedding his healthcare chip in a rocket fist. Hiro would later recover it and rebuild Baymax, allowing them to reunite.

Baymax appears in Big Hero 6: The Series with Adsit reprising the role.[14] The first episode, "Baymax Returns" takes place during the last part of the movie where Hiro rebuilds Baymax. Hiro changes his battle chip to a superhero chip so that Baymax won't turn evil like in the film. Later, Yama manages to copy his designs and creates evil versions of him though he and the Big Hero 6 destroy them.[15] Baymax is also shown to have, slightly, developed some self-awareness capabilities as he caught on to Wasabi's implication of urinating in fear.[16] Baymax is further shown to be versed in psychological evaluation and has even grasped the concept of emotional stress as seen in "Mr. Sparkles Loses His Sparkle".[17] Hiro later builds two other Max's that aid the Big Hero 6. The first are introduced in "Mr. Sparkles Loses His Sparkle" called Skymaxes.[17] They are six individually colored drones that contain and deliver the team's costumes where ever they are.[18] The other is a miniature version of Baymax called Mini-Max (voiced by John Michael Higgins) that watches Fred whenever the rest of the team is in class. Fred himself seems to view him as a sidekick, and the team never corrects him.[19] The episode "Portal Enemy", reveals that the original Baymax is still floating in the portal dimension.[20]

Baymax appeared in the Disney+ spin-off series Baymax! with Adsit reprising the role.[21]

Baymax, in his armored form, appears as a playable character in Disney Infinity 2.0 and Disney Infinity 3.0.[22][23][24]

Baymax appears as a playable character in the world building video game Disney Magic Kingdoms, being a character to unlock for a limited time.[25]

Both the original Baymax and the Baymax built by Hiro at the end of the film appeared in Kingdom Hearts III. Baymax appears as Sora's party member in the San Fransyoko world.[26] According to Square Enix and the film's producer Roy Conli, the story of Big Hero 6's world is a sequel to the events of the film.[27] In the game, the original Baymax is resurrected by a replica of Riku, who corrupts his fighting chip to destroy Big Hero 6. However, Sora and the second Baymax successfully defeat the corrupted Baymax and reprogram him into his original self.

The Happy Ride With Baymax, a rotating car ride centered on Baymax, opened in September 2020 at Tokyo Disneyland.[28]