Suggestions by @user_28338

Sean Penn

as Clayface in Tim Burton Batman 3: Continues (Forever)

Sean Penn

as Clayface in Batman Fancast

Martin Short

as Mad Hatter in Batman Fancast

Brad Dourif

as Scarecrow in Batman Fancast

Andy Serkis

as Penguin in Batman Fancast

Willem Dafoe

as Joker in Batman Fancast

Michael Keaton

as Batman in Batman Fancast

Brad Dourif

as Scarface in Batman: The Motion Picture Anthology Batman Villains

John Lithgow

as Ventriloquist in Batman: The Motion Picture Anthology Batman Villains

Glen Ferguson

as Man-Bat in Batman: The Motion Picture Anthology Batman Villains

Vin Diesel

as Killer Croc in Batman: The Motion Picture Anthology Batman Villains

Sean Penn

as Clayface in Batman: The Motion Picture Anthology Batman Villains

Nicolas Cage

as Scarecrow in Batman: The Motion Picture Anthology Batman Villains

Martin Short

as Mad Hatter in Batman: The Motion Picture Anthology Batman Villains

Courtney Love

as Harleen Napier in Batman: The Motion Picture Anthology Batman Villains

Jeep Swenson

as Antonio Diego in Batman: The Motion Picture Anthology Batman Villains

Uma Thurman

as Poison Ivy in Batman: The Motion Picture Anthology Batman Villains

Arnold Schwarzenegger

as Mr Freeze in Batman: The Motion Picture Anthology Batman Villains

Tommy Lee Jones

as Two-Face in Batman: The Motion Picture Anthology Batman Villains

Jim Carrey

as Riddler in Batman: The Motion Picture Anthology Batman Villains