Rei Amayado, a.k.a. MC MasterMind, is a conman, the creator of Hypnosis Mics, father of the Yamada Brothers and the third member of Dotsuitare Hompo.

Rei has wavy black hair and complete heterochromia; his left eye is green, whilst his right eye is grey, which is usually hidden behind his sunglasses. He has a beard and a scar on his right eye. Age: 46

Rei wears a maroon shirt, black fur coat, white snakeskin pants and beige shoes. He also wears black brick patterned hat with a fan-shaped clip