Mars Callahan

Personal Info

Known For

Acting

Known Credits

12

Gender

-

Birthday

-

Place of Birth

Studio City, California, U.S.

Also Known As

  • Gregory Mars Martin

Mars Callahan

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.

Known For

The Wonder Years
8.3%

The Wonder Years

Jan 31, 1988

That Thing You Do!
6.9%

That Thing You Do!

Oct 4, 1996

ER
7.8%

ER

Sep 19, 1994

Kalifornia
6.6%

Kalifornia

Jun 24, 1993

Highway to Hell
5.9%

Highway to Hell

Nov 21, 1991

Clifford
5.1%

Clifford

Apr 1, 1994

Poolhall Junkies
6.5%

Poolhall Junkies

Jun 30, 2002

Knots Landing
6.7%

Knots Landing

Dec 27, 1979

TV 101
5.0%

TV 101

Nov 29, 1988

Dog Patrol
0.0%

Dog Patrol

Sep 20, 2025

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Acting

2025
Dog Patrol as Agent Matters
2002
Poolhall Junkies as Johnny
1996
That Thing You Do! as Ernie the Disc Master Engineer
1994
ER as Matt
1994
Clifford as Brian
1993
Kalifornia as Walter Livesy
1991
Highway to Hell as State Policeman
1989
I Know My First Name Is Steven as Victor (Age 14)
1988
TV 101 as Jack #1
1988
The Wonder Years as Steve
1986
The Children of Times Square as Brian (as Gregory 'Mars' Martin)
1979
Knots Landing as Man

Directing

2007
What Love Is as Director
2002
Poolhall Junkies as Director
2001
Zigs as Director

Production

2005
Ballbreakers as Producer

Writing

2007
What Love Is as Writer
2002
Poolhall Junkies as Writer
2001
Zigs as Writer
Movies
TV Shows
People
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Mars Callahan