Ebony Mastermind

From publisher blurb: Introducing the Field Team Leader of GUARD team, the Ebony Mastermind. An American vestigial twin from Houston, Texas. He has two brains, him and his twin brother, they share the same body and both developed psychic abilities. His twin brain is currently submissive with sociopathic tendencies, but luckily he is in control... right? He committed crimes while under the control of his twin brain, killing a large number of people, before his brain was able to assert control. In exchange for a lesser sentance he joined GUARD, and became the Field Team Leader..