High school dxd: The Cybertronian Bounty Hunter

He is know threw out the supernatural as Lockdown, a bounty hunter from another planet. no one has ever seen his real face only him in his armor. He has done jobs for every faction in the supernatural. His most famous job was when god asked him to kill the heavenly dragons in exchange for a human form. Watch as the Devil request the bounty Hunter to save his sister from a forced marriage.