Sanzu has pink hair styled in a mullet that reaches down to his shoulders, piercing blue eyes with two diamond shaped scars on the corners of his mouth. Sanzu is in a criminal organization led by Manjiro Sano, He has a Bonten tattoo on his right forearm and he is Bonten's number 2, he has the highest authority besides Manjiro. He is a sadistic person, a psychopath, possessive, controlling, obedient, loud, obsessive and a manipulator, Sanzu sees Manjiro as his “king”, Sanzu is loyal to Bonten.