Name: Kohaku
Race: Human
Role: Demon Exterminator & Sango's Younger Brother
Age: 11
Personality: Determined
Weapon/Ability: Chain Sickle And Speed
Description: Kohaku is Sango's younger brother. Kohaku and the rest of his village was called to a castle to exterminate a spider demon. Naraku took over Kohaku's mind and killed his father. He is now Naraku's unwiling slave. Sango has promised to save him.

In episode 153, Kohaku regains his memories, and he now wants to kill Naraku, even if it kills him but he can't reveal any of this to Sango, because Naraku will kill him.