The_Final_Moon_Fang_Heaven-Piercer Saigo_no_Getsuga_Tenshō
By using this technique, Ichigo becomes Getsuga (月牙, Moon Fang) itself. It is referred to as the "Final" Getsuga Tenshō due to the fact that, once used, Ichigo loses all of his Shinigami powers.[1] For the duration of the ability, Ichigo's hair color turns black and rapidly grows to waist-length. A bluish-gray, bandage-like carapace forms around his torso, right arm, neck, and over the nose and mouth in mask fashion. Black, flame-like markings spread across his chest and wrap around his left arm, and the remains of a tattered black cloak cover his lower body. In this form, Ichigo's body constantly emits smoky black Reiatsu, most of which is focused around his right arm.
mugetsu form (bleach)