Suggestions by @maxcarter

Mel Blanc

as Vorb in We're Back! A Dinosaur's Story (1963)

Score: +1

Daws Butler

as Stubbs the Clown in We're Back! A Dinosaur's Story (1963)

Score: +3

Verna Felton

as Doctor Juliet Bleeb in We're Back! A Dinosaur's Story (1963)

Score: +3

Mary Badham

as Cecilia Nuthatch in We're Back! A Dinosaur's Story (1963)

Score: +3

Bruce Reitherman

as Louie in We're Back! A Dinosaur's Story (1963)

Score: +3

Boris Karloff

as Professor Screweyes in We're Back! A Dinosaur's Story (1963)

Score: +1

Jimmy Durante

as Captain Neweyes in We're Back! A Dinosaur's Story (1963)

Score: -1

Sterling Holloway

as Dweeb in We're Back! A Dinosaur's Story (1963)

Score: -1

Eve Arden

as Elsa in We're Back! A Dinosaur's Story (1963)

Score: +3

Louis Armstrong

as Woog in We're Back! A Dinosaur's Story (1963)

Score: +3

Phil Harris

as Rex in We're Back! A Dinosaur's Story (1963)

Score: +4

Godzilla and Mothra

as Romantic in Fictional Character Pairings

Score: +3

Christopher Lee

as Mecha-Godzilla in Monsterverse (1960s)

Score: +3

Lucille La Verne

as Anut Pristine Figg in Tom and Jerry: The Movie (1942)

Score: +6

Boris Karloff

as Lickboot in Tom and Jerry: The Movie (1942)

Score: +6

Paul Robeson

as Wasabi in Classic Hero Actors as Modern Heros

Score: +3

Katharine Hepburn

as Go Go Tomago in Classic Hero Actors as Modern Heros

Score: +3

Fay Wray

as Honey Lemon in Classic Hero Actors as Modern Heros

Score: +3

John Barrymore

as Baymax in Classic Hero Actors as Modern Heros

Score: +3

James Stewart

as Hiro Hamada in Classic Hero Actors as Modern Heros

Score: +3