Has short blue hair, white, shark-like eyes, and pale blue skin. Tall, handsome, and has many shark-like features. Aggressive, sadistic, and lacks compassion towards enemies. Strangely very affectionate towards those who gain his trust. Has mastered the use of Water Release jutsu. Wields Samehada, a sword that's alive and can absorb chakra from those it strikes. He treats it like one would treat a pet dog. Known as the Tailess Tailed Beast. He is user's partner in the Akatsuki.