Kenneth Mars (April 4, 1935 – February 12, 2011) was an American actor. He appeared in two Mel Brooks films: as the deranged Nazi playwright Franz Liebkind in The Producers (1967) and Police Inspector Hans Wilhelm Friedrich Kemp in Young Frankenstein (1974). He also appeared in Peter Bogdanovich's What's Up Doc? (1972), and Woody Allen's Radio Days (1987), and Shadows and Fog (1991).
Mars appeared in two seasons of Malcolm in the Middle as Otto Mannkusser, Francis's well-meaning but dimwitted boss and a German immigrant who owns a dude ranch. He voiced King Triton, Ariel's father, in the 1989 Disney animated film The Little Mermaid and its sequel, as well as its companion television series, and the Kingdom Hearts series. He also did several other animated voice-over film roles such as Littlefoot's grandfather in the Land Before Time series (up to 2008) and that of Professor Screweyes in We're Back! A Dinosaur's Story (1993), and King Colbert (Prince Cornelius's father) in Thumbelina (1994).
Description above from the Wikipedia article Kenneth Mars, licensed under CC-BY-SA, full list of contributors on Wikipedia.
Mike
Colyus
Beethoven (voice)
Hemsley Post
Wallace Carstairs
Mercer
Joseph
Archie
Otto Mannkusser
Richard (voice)
M2 (voice)
Auric (voice)
(segment "Tooth and Consequences")
William Tarkington IV
Officer Callahan
Narrator (voice)
Heimlich Menudo (voice)
Buzz (voice)
Buzz / Heimlich Menudo (voice)
Lou Granite
Self - Guest / Various Characters
(voice)
Manny Ziegler
Director
Poppa Grundov
Ace Atkins
Douglas Veenhof
King Triton (voice)
Dr. Thursby
Mr. Buchanan
Quickclaw (voice)
Adam Bronson
Uncle Louis Burton
Jake
Joe
Don Yorkfield
Dr. Mangram
Mr. Tinsley
Fetch
Mark Wyndham
Uncle Sid
Colonel Von Blasko
Narrator
Marty
Joshua T. Albertson
Dr. Hunterhanker (voice)
Judge John Zimring
Gunther
Sen. Donner
Horst
Harry Zarakardos
Clyde Hayes
Melvin
Ronald Bishop
Benny
Ridley
Mr. Hucklebuck
Native American (voice)
Sweet William (voice)
Additional Voices
Jim Sutton
King Triton (voice)
Old Gorilla (voice)
Les Hopkins
Sgt. Turnbuckle
Judge
The Camel with the Wrinkled Knees
Lester De Ville
Dr. Pratt
Bill
Marshal
Clown
Inspector Kemp
King Colbert (voice)
Mayor
Franz Liebkind
Hugh Simon
Self
Professor Screweyes (voice)
Grandpa (voice)
Grandpa (voice)
Grandpa (voice)
Nick
Stanton Boyd
Grandpa / Parasaurlophus (voice)
Former FBI Agent Will
Rabbi Baumel
Grandpa (voice)
Grandpa / Lambeosaurus (voice)
Grandpa (voice)
Mr. Crisp
Lou
Grandpa (voice)
King Triton (voice)
Grandpa (voice)
Mr. Bobrucz
Grandpa (voice)
Cmdr. Drury
Grandpa (voice)
Magician
Woolly Bill Hitchcock
Dr. Charlie Rollins
Dr. Sam Gillison
King Triton (voice)
Magician
Director / Dogcatcher (voice)
Dr. Julius Roth
Broker
Hal B. Keeler
Son
Robert E. Sherwood
Buzz
The Coach - Principal Cleveland
Reverend Farrell
A.J. Norbecker
Paul Wrightwood
Gene Molinari
Vultor / Walt (voice)
Dr. Arnold Bowman
Otto Bentwood
Red Hewitt
Max Mencken
Mitchell Bernard
Uncle Al
Old Gorilla (voice)
Kruse
Ben Fryer
Mr. Kolenkhov
Self
Smokey
Professor Von Trapp (voice) (archive footage)
Inspector Kemp (archive footage)
Reverend Pete
Lyndon Johnson
Grandpa Longneck
Self
Self
Self