Mickey is a resident of Liberty City in The Lost and Damned and was a member of The Lost MC. He was arrested and turned states evidence against the gang, although he was still sent to prison.

Johnny clearly views Mickey as a traitor as he replies angrily when Clay mentions him during a friendship activity, stating that the chapter should pretend he never existed. Because of this hatred it is likely that Johnny would order Mickey's death should he ever leave the relative safety of Alderney State Correctional Facility.