Suggestions by @noobmaster69

David Harbour

as Detective Harvey Bullock in The Batman

Ciarán Hinds

as Ra's Al Ghul in The Batman

Adewale Akinnuoye-Agbaje

as Waylon Jones "Killer Croc" in The Batman

Ron Perlman

as Cyrus Gold "Solomon Grundy" in The Batman

Tim Blake Nelson

as Jervis Tetch "The Mad Hatter" in The Batman

Isla Fisher

as Pamela Isley "Poison Ivy" in The Batman

Eric André

as Dr. Bartholomew Wolper in The Batman

David Thewlis

as Commissioner Jim Gordon in The Batman

Nicholas Hoult

as Dick Grayson "Robin" in The Batman

Sasson Gabai

as Ra's Al Ghul in The Batman

Ethan Suplee

as Arnold Wesker "The Ventriloquist" in The Batman

Crystal Reed

as Selina Kyle "Catwoman" in The Batman

Crystal Reed

as Talia Al Ghul in The Batman

Domhnall Gleeson

as William Tockman "The Clock King" in The Batman

Alan Tudyk

as Dr. Kirk Langstrom "Man-Bat" in The Batman

Jonathan Rhys Meyers

as Bruce Wayne "Batman" in The Batman

Linus Roache

as Dr. Kirk Langstrom "Man-Bat" in The Batman

Sharlto Copley

as Dr. Kirk Langstrom "Man-Bat" in The Batman

Toby Stephens

as Slade Wilson "Deathstroke" in The Batman

George Clooney

as Slade Wilson "Deathstroke" in The Batman