Bo Ku was the only son of a seller of used starships and hover craft. He learned to work on and build his own vehicles at an early age. In his adolescents his parents were killed by a ruthless criminal. This drove Do Ku into bounty hunting. He only hunts murders, not political fugitives, and never returns a bounty alive. He is respected by his peers, and feared by his bounties. His ship is the Otravaiolet.