With all the heart and humor audiences expect from Walt Disney Animation Studios, “Big Hero 6” is an action-packed comedy-adventure about robotics prodigy Hiro Hamada, who learns to harness his genius—thanks to his brilliant brother Tadashi and their like-minded friends: adrenaline junkie Go Go Tamago, neatnik Wasabi, chemistry whiz Honey Lemon and fanboy Fred. When a devastating turn of events catapults them into the midst of a dangerous plot unfolding in the streets of San Fransokyo, Hiro ...