Filmography
- The Land Before Time (2007–2011) – Grandpa Longneck
- Hannah Montana (TV) (2007) – Gunther the Innkeeper
- Kingdom Hearts II (VG) (2006) (voice) – King Triton
- Kingdom Hearts (VG) (2002) (voice) – King Triton
- Malcolm in the Middle (TV) (2002–2004) – Otto Mannkusser
- Becker (TV) – (2001) Melvin (3 Episodes)
- The Little Mermaid II: Return to the Sea (voice) (2000) – King Triton
- Fallout (voice) (1997) – Vault 13 Overseer
- Batman: The Animated Series (voice) (1995) – M2 (In the episode "The Lion and the Unicorn")
- The Land Before Time series (II-present) (voice) (1994–2011) – Grandpa
- Thumbelina (voice) (1994) – King Colbert
- Star Trek: Deep Space Nine (1994) – Colyus
- Felidae (1994) - Preterius (English dub)
- Batman: The Animated Series (voice) (1994) – Richard (In the episode "Sideshow")
- Animaniacs (voice) (1993) – Ludwig van Beethoven (In the episode "Roll Over Beethoven")
- Swat Kats: The Radical Squadron (voice) (1993) - Dr. Wally Gilbert Kenrousch
- We're Back! A Dinosaur's Story (voice) (1993) – Professor Screweyes
- Shadows and Fog (1992) – Armstead the Magician
- Fievel's American Tails (1992) – Sweet Williams (6 Episodes)
- A Different World (1992) – Homeless Man
- Darkwing Duck (TV) (voice) (1991–1995) – Tuskerninni
- Freakazoid! (TV) (voice) Dr. Gunter Hunter Hanker
- Tale Spin (TV) (voice) (1990–1994) – Heimlich Menudo, Prof. Buzz
- The Little Mermaid (voice) (1989) – King Triton
- Police Academy 6: City Under Siege (1989) – The Mayor/The Mastermind
- Get Smart, Again! (1989) (TV) – Cmdr. Drury
- The Smurfs (1989) season (TV) – additional voices
- Rented Lips (1988) – Reverend Farrell
- For Keeps? (1988) – Mr. Bobrucz
- Illegally Yours (1988) – Hal B. Keeler
- A Pup Named Scooby-Doo (TV) (voice) (1988–1991) – Dogcatcher Ghost
- Radio Days (1987) – Rabbi Baumel
- The Adventures of the American Rabbit (voice) (1986) – Voltor/Buzzard
- Prince Jack (1985) - Lyndon B. Johnson
- Misfits of Science (TV) (1985) – Sen. Donner
- Beer (film) (1985) – Adolphe Norbecker
- Fletch (1985) – Stanton Boyd
- The Biskitts (1983) - King Max
- Yellowbeard (1983) – Mr. Crisp and Senior Verdugo
- Full Moon High (1981) – Coach Cleveland / Principal Cleveland
- The Apple Dumpling Gang Rides Again (1979) – Marshal Woolly Bill Hitchcock
- Heaven Only Knows (TV) (1979)
- Goin Coconuts (1978)
- Night Moves (1975) – Nick
- The New Original Wonder Woman (TV) (1975) – Colonel Oberst Von Blasko (1 episode)
- Young Frankenstein (1974) – Police Inspector Hans Wilhelm Friedrich Kemp
- The Parallax View (1974) – Former FBI Agent Will
- Guess Who's Been Sleeping in My Bed? (1973) (TV) – Mitchell Bernard
- What's Up, Doc? (1972) – Hugh Simon
- Desperate Characters (1971) – Otto Bentwood
- Butch Cassidy and the Sundance Kid (1969) – Marshal
- The April Fools (1969) – Les Hopkins
- The Producers (1968) – Franz Liebkind
- He & She (TV) (1967–1968) – Harry Zarakartos
- The Ghost & Mrs. Muir (TV) - (1968-1970) (2 episodes)
- The New Adventures of Winnie the Pooh - off-screen narrator
Read more about this topic: Kenneth Mars