Operates as the leader of Desperado-004 under the name "GREN". He's an escaped convict who believes that the world is full of sin, saying that the world is "rotten to the core". He seeks to cleanse the world of it's sin, returning it to the way it should be even if that means destroying it.
He has a personal grudge against Yamada Ichiro and wishes to kill him, though like the other members of his team who share initials with members of The Dirty Dawg, he shares the initials "Y.I." with him.
