Gaiya

Gaiya (ガイヤ)

Master of Kokuzan Ongyō Ken (黒山陰形拳, "Black Mountain Secret Form Fist"), a style that can can attack people without being seen at all. He is actually a very plain looking man, but he controls the Meiō Army completely in secret. Brother of Sakuya. He was able to defeat Ryūga and fatally wound Sōga, but was unable to defeat Raoh.