Baymax was invented by Tadashi Hamada as a project for the San Fransokyo Institute of Technology showcase: a healthcare robot designed to help anyone in need. However, Tadashi also built Baymax in hopes the robot would one day befriend his brother Hiro.
Baymax is a robotic nurse programmed to help anyone in need. He is also designed to prevent harm from coming to anyone. Baymax can also show affection and compassion in order to help his patients.