Zamasu was once a proud Kai in training from Universe 10. She saw herself as a being of superior intellect and moral righteousness. As she studied the mortals, her growing disdain for their violent and selfish nature consumed her. She believed that mortal life was inherently flawed, leading her down a path of extreme measures. Her desire for absolute order and purity made her plan the “Zero Mortals Plan,” seeking to eliminate all mortal life across the multiverse.