Born on January 26 in New York. He attended American University before pursuing his comedy career. After trying his hand at stand-up, Callen made his TV debut as a series regular on Mad TV, which also served as his breakthrough. Callen's hobbies include karate, boxing, wrestling and fencing. He currently resides in Venice, California.


Hobbies include street fighting, speed walking and riding dolphins. Lived overseas until 14 years of age in various countries including: Phillippines, India, Pakistan, Lebanon, Greece and Saudi Arabia because his father was a banker. Suffers from a general malaise and nostalgia from time to time.