Hajime Muroto (室戸 一, Muroto Hajime) is a crazy bum hunter.
A juvenile delinquent whose hobbies include beating homeless people to death with a baseball bat, messing with people's heads by blaming all his actions on someone else, and basically killing people whenever possible. He blames his behaviour on his mom for beating him up several times.
Featured only in the anime, and the youngest of the two bum hunters. He can be seen as the main antagonist of the final anime arc.
In the end of the mission, Kurono captured and transported him somewhere with the Y-gun.