Kenneth Mars was an American television, movie, and voice actor. He may be best-remembered for his roles in several Mel Brooks

Mel Brooks

Mel Brooks is an American film director, screenwriter, composer, lyricist, comedian, actor and producer. He is best known as a creator of broad film farces and comic parodies. He began his career as a stand-up comic and as a writer for the early TV variety show Your Show of Shows...

 films: the insane Nazi playwright Franz Liebkind in 1968's The Producers

The Producers (1968 film)

The Producers is a 1968 American satirical dark comedy cult classic film written and directed by Mel Brooks. The film is set in the late 1960s and it tells the story of a theatrical producer and an accountant who want to produce a sure-fire Broadway flop...

, and the relentless Police Inspector Hans Wilhelm Fredrich Kemp in 1974's Young Frankenstein

Young Frankenstein

Young Frankenstein is a 1974 American comedy film directed by Mel Brooks and starring Gene Wilder as the title character, a descendant of the infamous Dr. Victor Frankenstein. The supporting cast includes Teri Garr, Cloris Leachman, Marty Feldman, Peter Boyle, Madeline Kahn, Kenneth Mars, Richard...

. He also appeared in several seasons of Malcolm in the Middle

Malcolm in the Middle

Malcolm in the Middle is an American television sitcom created by Linwood Boomer for the Fox Network. The series was first broadcast on January 9, 2000, and ended its six-and-a-half-year run on May 14, 2006, after seven seasons and 151 episodes...

 as Otto, Francis' well-meaning but dim-witted boss.
Mars made his acting debut in 1962 as a book publisher on the comedy series Car 54, Where Are You?

Car 54, Where Are You?

Car 54, Where Are You? is an American sitcom that ran on NBC from 1961 to 1963. Episodes had various directors, the most recognized being Al De Caprio. Stanley Prager and Nat Hiken also directed several episodes. Most of its filming was on location in The Bronx, and at Biograph...

.