
Mars Callahan
Acting
Biography
From Wikipedia, the free encyclopedia. Mars Callahan (born 1971) is an American actor, director, producer and writer. He is known, among other things, for the movie Poolhall Junkies where he served as director, actor and screenwriter. At the age of eleven Callahan toured with a children's musical group through thirty-seven states. At fifteen he received his first acting role in the television series The Wonder Years. After honing his acting skills in television he tried for the big screen and soon appeared in various films. Inspired by the directors he worked with Callahan decided to try working behind the camera and in 1998 shot his first short film The Red Bag. In a 2007 Hollywood Reporter interview he revealed that he has had serious health problems when doctors found a tumor in his right kidney. He lost his right kidney, his right adrenal gland and has been in and out of a wheelchair for years. Description above from the Wikipedia article Mars Callahan, licensed under CC-BY-SA, full list of contributors on Wikipedia.
Filmography
12 credits
Poolhall Junkies
Movie • 2002
Johnny

Dog Patrol: Operation Santa Paws
Movie • 2025
Agent Matters

Kalifornia
Movie • 1993
Walter Livesy

Highway to Hell
Movie • 1991
State Policeman

The Children of Times Square
Movie • 1986
Brian (as Gregory 'Mars' Martin)

That Thing You Do!
Movie • 1996
Ernie the Disc Master Engineer

Clifford
Movie • 1994
Brian

I Know My First Name Is Steven
TV • 1989
Victor (Age 14)

The Wonder Years
TV • 1988
Steve

TV 101
TV • 1988
Jack #1

Knots Landing
TV • 1979
Man

ER
TV • 1994
Matt