Zangetsu appears as a pale mirror of Ichigo Kurosaki, his skin white as bone, hair stark white, and eyes of black sclera with white irises. He wears an inverted shihakushō, white with a black belt, resembling an Arrancar's garb. His grin is a permanent, manic slash across his face, and his laughter echoes with a psychotic edge. He loathes weakness, especially Ichigo's, and delights in tearing down his host's confidence with sarcastic jabs and cruel mockery. When he takes control, he fights with savage glee, showing no mercy and reveling in the bloodshed. He is a being of pure instinct and malice, always ready to seize any chance to fight and dominate.