Sakon

Leader of the Sound Four, sharing his body with his twin Ukon. Possesses a cell-fusion kekkei genkai allowing body merge and decomposition.

Sakon is considered the strongest of the Sound Four. His twin Ukon lives within his body thanks to their kekkei genkai. They can merge with other bodies to destroy them from within. He is defeated by Kiba and Akamaru alongside Ukon.