Quinn

A U.S. Marshal turned vigilante hitman. He is a little over 6 feet tall, with light brown hair and green eyes. He has a solid build and is around Nadia Stafford's age. Jack considers him a blowhard but trustworthy.

Background
After a domestic abuse turned murder case, Quinn is asked by the father of the woman to kill the boyfriend. Quinn refuses gently, telling the father to let justice takes its course. The father kills the boyfriend and gets arrested. As a result, Quinn becomes a "Vigilante For Hire".