Suggestions by @smhc2005

Van Johnson

as The Minstrel in Batman '66: The Extended Universe

Score: +1

Art Carney

as The Archer in Batman '66: The Extended Universe

Score: +1

Francine York

as Lydia Limpet in Batman '66: The Extended Universe

Score: +1

Roddy McDowall

as The Bookworm in Batman '66: The Extended Universe

Score: +1

David Wayne

as The Mad Hatter in Batman '66: The Extended Universe

Score: +1

Malachi Throne

as False Face in Batman '66: The Extended Universe

Score: +1

Frank Sinatra

as Music Meister in Batman '66: Season Three and a Half

Score: +1

Fred Willard

as The Joker in Joel Schumacher's Batman (1989)

Score: 0

Melendy Britt

as Catwoman in Batman: The Animated Series (1980's)

Score: +1

Mel Blanc

as Clayface in Batman: The Animated Series (1980's)

Score: +1

Frank Gorshin

as The Riddler in Batman: The Animated Series (1980's)

Score: +1

Don Messick

as The Scarecrow in Batman: The Animated Series (1980's)

Score: +1

Olan Soule

as Bruce Wayne in 1970s Batman Fan-Cast

Score: +1

Adam West

as Bruce Wayne in 1970s Batman Fan-Cast

Score: +2

Michael McKean

as The Joker in Batman: The Animated Series (1980's)

Score: +1

Andre Stojka

as The Scarecrow in Batman: The Animated Series (1980's)

Score: +1

Paul Williams

as The Penguin in Batman: The Animated Series (1980's)

Score: +1

Ted Knight

as The Penguin in Batman: The Animated Series (1980's)

Score: +1

Frank Welker

as The Joker in Batman: The Animated Series (1980's)

Score: +1