Big Hero 6

Big Hero 6 is about Robotics prodigy a boy named Hiro (Ryan Potter) lives in the city of San Fransokyo. Next to his older brother, Tadashi, Hiro's closest companion is Baymax (Scott Adsit), a robot whose sole purpose is to take care of people.

When a devastating turn of events throws Hiro into the middle of a dangerous plot, he transforms Baymax and his other friends, Go Go Tamago (Jamie Chung), Wasabi (Damon Wayans Jr.), Honey Lemon (Genesis Rodriguez) and Fred (T.J. Miller) into a band of high-tech heroes.

Well Hiro's brother died in the movie Hiro is an Asian boy but he looks like a white cartoon character. 

The creator of Big Hero 6 is Steven T. Seagle. I like the movie and maybe you should watch it two.