Mickey is a former criminal who is a family friend of the Belchers. He is currently a carnie at Wonder Wharf and operates some rides. However, Mickey has a lasting obsession with wanting to rob banks.
Mickey is generally a kind, if misled individual. He claims to have spent his childhood breaking windows, doing drugs, setting fire to things and even "throwing rats down a river in a bottle," but does not exhibit this kind of violence as an adult, as despite his criminal lifestyle he has yet to harm anyone else physically (or even really show the intent to, as his threats were all purposefully empty) and just seems to care about money. As the Belchers know him, he is extremely sensitive, but otherwise mild-mannered.
Mickey's hero is Superman, despite his criminal history. He has a good sense of humor and enjoys jokes; he also loves Bob's Burgers and seems to have a soft spot for children and animals.