Suggestions by @joaopedro4

Don Bluth

as Writer in Ice Age (1982)

Rodney Dangerfield

as Manfred in Ice Age (1982)

Leslie Nielsen

as Manfred in Ice Age (1982)

Jamie Elman

as Rancis Fluggerbutter in Wreck It Ralph (Disney+ Animated Series)

Katie Lowes

as Candlehead in Wreck It Ralph (Disney+ Animated Series)

Donald Sutherland

as Henry J. Waternoose in Monsters, Inc. (1971)

Christopher Lee

as Henry J. Waternoose in Monsters, Inc. (1971)

Christopher Lloyd

as Henry J. Waternoose in Monsters, Inc. (1971)

Christopher Plummer

as Henry J. Waternoose in Monsters, Inc. (1971)

James Mason

as Henry J. Waternoose in Monsters, Inc. (1971)

Gregory Peck

as Henry J. Waternoose in Monsters, Inc. (1971)

Henry Mancini

as Composer in Monsters, Inc. (1971)

Elmer Bernstein

as Composer in Monsters, Inc. (1971)

George Bruns

as Composer in Monsters, Inc. (1971)

Ralph Wright

as Writer in Monsters, Inc. (1971)

Wolfgang Reitherman

as Producer in Monsters, Inc. (1971)

Wolfgang Reitherman

as Director in Monsters, Inc. (1971)

Ricardo Montalban

as Henry J. Waternoose in Monsters, Inc. (1971)

Henry Mancini

as Composer in Monsters University (1973)

Elmer Bernstein

as Composer in Monsters University (1973)