Baymax

Baymax is one of the main characters of the upcoming 2014 film Big Hero 6. He is a robot member of the superhero team of the same name who was given a special battle armor by Hiro Hamada to become an active fighter. He is based on the Marvel character of the same name from the Marvel comic Big Hero 6.

Background
Baymax was created by Tadashi as a healthcare providing robot nurse for Hiro. However, after Tadashi's death and while evil forces mysteriously arose in the city of San Fransokyo, Hiro transformed Baymax into a crime fighting warrior, aligning him with a group of young intellectuals, and a fan of his, named Fred, to form the Big Hero 6 superhero team. Actually, he looks like Sandman, the Guardian of Dreams in Rise Of The Guardians.