He is the result of the fusion between the man in black and Zangetsu while both are in the Bankai state. The manifestation's appearance in this state is a combination of the man in black and Tensa Zangetsu ; he has Tensa Zangetsu's white hair and attire, albeit with the black fur at the edges of the robe in addition to its placement on his collar and wrists, and mask remnants, but physically, he resembles the younger man in black, with his skintone. Furthermore, left of his eyes has a black sclerae with a silver iris, while the right eye is normal with a blue iris. Tensa Zangetsu's personality appears to draw largely from the man in black's own personality, appearing to be calm and rational, yet, much like Zangetsu, he is prone to shouting. A trait shared by both of his original sources, and carried over to the merged being, is a desire to protect his wielder, Ichigo Kurosaki. When Zangetsu and the man in black merged into one being, he informed Ichigo that originally, the two of them function as one being anyway; both of them are Ichigo's source of power.