He is a friend of Andre Cooper from his time working as a longshoreman. He was hired by Dominic to steal a shipment of guns and killed a fellow longshoreman named Milo Jacobs during the robbery. Fearing that Andre is going to testify against him to the DA he kidnaps him and Fusco, who's working undercover as his client. They are rescued by Reese and Shaw and Mickey is arrested. Andre later testifies against him.
He is a street vendor who sells knockoff purses. He witnessed the murder of Milo Jacobs but was intimidated into withdrawing his testimony. Reese offers him enough money to star a new life in exchange for his testimony.
A Latvian mobster, he is interested in buying the missile Root and Finch acquired from Rance. When Finch refuses to sell it to him Root is forced to take out Janis and his men by kneecapping them. They are later arrested. The whole deal was orchestrated by The Machine for Finch to have access to Janis' money and weapons cache to help in the fight against Samaritan.
A junkyard owner, he also works as a weapons dealer. Acting as legendary ex-mercenary from Blackwater, Finch convinces him to sell them a missile. He is later arrested by the police on a tip from The Machine.
He was the prime suspect in his wife's murder but the police didn't have enough evidence on him. Reese was able to trace some emails between him and a hitman and later arrested the both of them along with a recorded confession.