Suggestions by @frankentrapta

Terry-Thomas

as Waluigi in The Super Mario Bros. (1950 film)

Score: +7

John DiMaggio

as Bowser in Recasting Illumination's Super Mario Bros

Score: +1

Ron Perlman

as Bowser in Recasting Illumination's Super Mario Bros

Score: +1

Statler and Waldorf

as Mr. Boddy in Clue: A Muppet Mystery

Score: +2

Rowlf the Dog

as Mr/s. White in Clue: A Muppet Mystery

Score: +1

Janice

as Mr/s. Peacock in Clue: A Muppet Mystery

Score: +3

Fozzie Bear

as Detective 2 in Clue: A Muppet Mystery

Score: +2

Scooter

as Detective 2 in Clue: A Muppet Mystery

Score: +1

Gonzo the Great

as Mr/s. Peacock in Clue: A Muppet Mystery

Score: +1

Dr. Bunsen Honeydew

as Professor Plum in Clue: A Muppet Mystery

Score: +1

Sam the Eagle

as Colonel Mustard in Clue: A Muppet Mystery

Score: +3

Rizzo the Rat

as Mr/s. Green in Clue: A Muppet Mystery

Score: +1

Kermit the Frog

as Detective 1 in Clue: A Muppet Mystery

Score: +2

Miss Piggy

as Miss Scarlet in Clue: A Muppet Mystery

Score: +1

Eartha Kitt

as Mrs. Peacock in Clue (1950)

Score: +2

Quinta Brunson

as Detective Mallory Edgar in Hasbro Games Cinematic Universe (Animated)

Score: +1

Richard Kind

as Cavity Sam in Hasbro Games Cinematic Universe (Animated)

Score: +1

Ethel Waters

as Mrs. Peacock in Clue (1950)

Score: -2

Lionel Atwill

as Col. Mustard in Clue (1950)

Score: +1

Una O'Connor

as Mrs. White in Clue (1950)

Score: +1