Character: baymax
Baymax is the deuteragonist of Disney's 2014 animated feature film, Big Hero 6. He is a healthcare robot and member of the superhero team known as Big Hero 6.
He is an inflatable white robot with his metal parts built from inside. They are only visible when one looks deep inside through his inflatable vinyl material. Baymax's external structure resembles the appearance of a snowman, or, as Hiro calls him, a big marshmallow. A small badge-shaped access port is placed on the left side of his chest that can hold four cartridge chips to contain his programming.
He is based on the Marvel character of the same name from the Marvel Comics series, Big Hero 6.
This tag implicates big_hero_6 (learn more).