Suggestions by @hazb982

Robin Williams

as Gub gub in Doctor Doolittle (1992)

Score: +1

Miriam Margolyes

as Polynesia the parrot in Doctor Doolittle (1992)

Score: +1

Tony Jay

as Doctor John Dolittle (voice) in Doctor Doolittle (1992)

Score: +1

Grey DeLisle

as Magpie in Lego Batman the animated series

Score: +1

Oxygen

as Stories in Doctor Who episodes with a leftist message

Score: +1

Eric Roberts

as 1970s in What Actors Could've Played Luke Skywalker in Various Decades?

Score: +5

Tom Kenny

as Polka dot man in Lego Batman the animated series

Score: +1

Thomas F. Wilson

as Killer moth in Lego Batman the animated series

Score: +1

Tom Kane

as Clock king in Lego Batman the animated series

Score: +1

Dee Bradley Baker

as Joker in Lego Batman the animated series

Score: +1

Corey Burton

as Mr freeze/ Dr. victor Fries in Lego Batman the animated series

Score: +1

Wayne Knight

as Penguin/ Oswald Cobblepot in Lego Batman the animated series

Score: +1

Wally Wingert

as Riddler/ Edward Nigma in Lego Batman the animated series

Score: +1

James Arnold Taylor

as Shockwave in Who Would Voice Shockwave In The Future?

Score: +1

Scott Menville

as Robin/ Damian Wayne in Lego Batman the animated series

Score: +1

Rino Romano

as Batman/ Bruce Wayne in Lego Batman the animated series

Score: +1

Dan Castellaneta

as Best Devil in Best & Worst of Horror

Score: +1

Dennis Hopper

as Hopper in A Bug's Life

Score: +2

Eric Roberts

as Great actors in Why do Villains always get the good stuff?

Score: +3

Efrem Zimbalist Jr.

as Dr. Otto Octavius/Doc Ock in Best Actors of Spider-Man Characters

Score: +1