Suggestions by @chandlermchugh

Margaret Qualley

as Silk Spectre II in Watchmen

Callum Turner

as Nite Owl II in Watchmen

Jon Bernthal

as Rorschach in Watchmen

Ryan Gosling

as Thomas Petty in Running Down a Dream: The Tom Petty Story

John Goodman

as Lieutenant Harvey Bullock in Batman: Echoes

Ian McKellen

as Alfred Pennyworth in Batman: Echoes

Jerry Hall

as Alicia Hunt in Batman: Echoes

Arnold Schwarzenegger

as Blockbuster in Batman: Echoes

Harvey Fierstein

as Chuck Lantz in Batman: Echoes

Martin Short

as The Riddler in Batman: Echoes

Ben Kingsley

as Dr. Hugo Strange in Batman: Echoes

Andy Garcia

as Ra's al Ghul in Batman: Echoes

Madonna

as Harley Quinn in Batman: Echoes

Jeff Goldblum

as Scarecrow in Batman: Echoes

Michelle Pfeiffer

as Catwoman in Batman: Echoes

Winona Ryder

as Batgirl in Batman: Echoes

Marlon Wayans

as Robin in Batman: Echoes

Michael Keaton

as Batman in Batman: Echoes

Al Pacino

as Carmine Falcone in Batman: Shadows

Garrett Morris

as Jerome Otis in Batman: Shadows