Martin Mull is an American actor, comedian and musician best known to television audiences for his role as Principal Willard Kraft in Sabrina, the Teenage Witch, from 1997-2000.
Mull made his acting debut as Garth Gimble in the series Mary Hartman, Mary Hartman and then appeared as Garth's twin brother in the spinoff series, Fernwood 2-Night.
His other television credits include Domestic Life, His and Hers and The History of White People in America. He was also a regular in the series Roseanne and The Ellen Show. Mull's feature film credits include Clue, Serial, Mrs. Doubtfire, Mr. Mom and My Bodyguard.
Mull began his career as a musician/singer/songwriter/comedian and has made several recordings, including I'm Everyone I Ever Loved, which was nominated for a Grammy Award for Best Comedy Recording. After 15 years of performing in virtually every club across the country, Mull decided to pursue a career in television and film.
In addition to performing, Mull is also an exhibiting artist, whose paintings have been shown in numerous galleries and museums nationwide.
Mull was born in Chicago and lives in Los Angeles with his wife, musician-composer Wendy Haas. They have a daughter, Maggie.