Suggestions by @luke_the_spook

Rupert Grint

as The Riddler in The Unique Batman Cast

Andy Biersack

as Joker in The Unique Batman Cast

Jennette McCurdy

as Poison Ivy in The Unique Batman Cast

Sophia Lillis

as Harley Quinn in The Unique Batman Cast

Gerard Way

as Batman in The Unique Batman Cast

Chris Pratt

as Killer Moth in The Perfect Batman Movie

Brandon Rogers

as The Creeper in The Perfect Batman Movie

Griffin Taylor

as Beast Boy in The Perfect Batman Movie

Charlie Heaton

as The Scarecrow in The Perfect Batman Movie

Henry Rollins

as Solomon Grundy in The Perfect Batman Movie

Eric André

as Cyborg in The Perfect Batman Movie

Billie Joe Armstrong

as The Flash in The Perfect Batman Movie

Karen Gillan

as Wonder Woman in The Perfect Batman Movie

Tom DeLonge

as Superman in The Perfect Batman Movie

Billy Corgan

as Mr. Freeze in The Perfect Batman Movie

Seth MacFarlane

as Two-Face in The Perfect Batman Movie

Jennette McCurdy

as Poison Ivy in The Perfect Batman Movie

Rupert Grint

as The Riddler in The Perfect Batman Movie

Devon Bostick

as Red Hood in The Perfect Batman Movie

Rosario Dawson

as Catwoman in The Perfect Batman Movie