Maya Rudolph Aunt Cass Voice Ryan Potter Hiro Voice Scott Adsit Baymax Voice Jamie Chung Go Go Voice Alan Tudyk Alistair Krei Voice Genesis Rodriguez Honey Lemon Voice David Shaughnessy Heathcliff Voice Stan Lee Fred's Dad Voice Khary Payton Wasabi Voice Brooks Wheelan Fred Voice Mark McCorkle Executive Producer Robert Schooley Executive Producer Nicholas Filippi Executive Producer