Tony Cox decided to pursue acting after watching Billy Barty, a little person who was an actor and founder of the organization Little People of America. Encouraged by relatives and friends, he moved to Los Angeles at age 18. He began taking classes at the Merrick Studio School of Acting with Scriptwriter De De Tillman and soon began working in commercials, film, and television roles. He is better known for his roles in Bad Santa where he played Marcus, the brains of a safe cracking duo, and in Date Movie where he played a parody of Dr. Hitch from Hitch. Cox reprised his role as Marcus in Bad Santa 2, released in 2016.

Cox also appeared on the TV show Martin in the first season, playing the character Bennie, in which he helps his friend Trey, played by Bushwick Bill, beat up Tommy played by Thomas Mikal Ford, over Tommy allegedly “stealing” his ex-girlfriend.

Cox also appeared in a pivotal role in the Farrelly Brothers’ movie Me, Myself & Irene, playing a Mensa International-member limousine driver who steals Jim Carrey‘s character’s wife.