Suggestions by @allstargamer

Nicholas Cage

as Scarecrow in The Brave and Bold

Kaley Cuoco

as Harley Quinn in The Brave and Bold

Keanu Reeves

as Two-Face in The Brave and Bold

Matthew Lillard

as Ventriloquist in The Brave and Bold

Zendaya

as Catwoman in The Brave and Bold

Johnny Depp

as Black Mask in The Brave and Bold

Jude Law

as James Gordon in The Brave and Bold

Wagner Moura

as Scarface in The Brave and Bold

Giancarlo Esposito

as Mr. Frezee in The Brave and Bold

Aidan Gallagher

as Nightwing in The Brave and Bold

Jim Parsons

as Riddler in The Brave and Bold

Willem Dafoe

as Joker in The Brave and Bold

Walker Scobell

as Robin in The Brave and Bold

Jensen Ackles

as Batman in The Brave and Bold

Andy Muschietti

as Director in The Brave and Bold