Mickey O'Malley is a retired police-officer. He is LongArm's father, Linda O'Malley's father-in-law and Brian's grandfather. Though at age, he he still has the drive and the courage he had in his younger days a police-officer. He is always willing to share his wisdom of police work with the present-day C.O.P.S, though he can become a bit overenthusiastic at times.