He was 250 pounds of muscle and ego. He was former lover of Marcie Honesworth.
Mitchell confronted Grimjack because he didn’t want more investigation regarding Marcie’s death. He was defeated and tell him he and Marcie busted up few weeks before her death because her grades were off and she was gonna get the boot.
He was a lackey of Candyman. But when he saw the open diary and decided to go Freelance and put the book up for auction. He was in way over his head.
Finally he died at the hands of Heinrich Krupp.