Suggestions by @joshparker

David Corenswet

as Buckethead in Guns N Roses biopic

KJ Apa

as Jimmy Olsen in James Gunn's DC Cinematic Universe

Matt Smith

as Shade The Changing Man in James Gunn's DC Cinematic Universe

Kurt Russell

as Wildcat (Ted Grant) in James Gunn's DC Cinematic Universe

Nathan Fillion

as The Atom in James Gunn's DC Cinematic Universe

Todd Stashwick

as Phantom Stranger in James Gunn's DC Cinematic Universe

Jimmy Fallon

as Creeper in James Gunn's DC Cinematic Universe

Lambert Wilson

as Monsieur Mallah in James Gunn's DC Cinematic Universe

Daveed Diggs

as Mr. Terrific in James Gunn's DC Cinematic Universe

Woody Harrelson

as Metamorpho The Element Man in James Gunn's DC Cinematic Universe

Eddie Hall

as Kalibak in James Gunn's DC Cinematic Universe

Jeffrey Combs

as Desaad in James Gunn's DC Cinematic Universe

Patrick Warburton

as The Question in James Gunn's DC Cinematic Universe

Jim Carrey

as Mr. Mxyzptlk in James Gunn's DC Cinematic Universe

Oded Fehr

as Ra's al ghul in James Gunn's DC Cinematic Universe

Yasmin Al Massri

as Talia al Ghul in James Gunn's DC Cinematic Universe

Hassan Malek

as Damian Wayne in James Gunn's DC Cinematic Universe

Jared Harris

as Alfred Pennyworth in James Gunn's DC Cinematic Universe

Nick Offerman

as Commissioner James Gordon in James Gunn's DC Cinematic Universe

Nicholas Hoult

as Lex Luthor in James Gunn's DC Cinematic Universe