Suggestions by @themiscgeek

Tanner Buchanan

as The Flash in Smallville: The Movie

Lee Thompson Young

as Cyborg in Smallville: The Movie

Alan Ritchson

as Aquaman in Smallville: The Movie

Justin Hartley

as Green Arrow in Smallville: The Movie

Tom Welling

as Superman in Smallville: The Movie

Dante Olsen

as Bruce Wayne (Joker) in Batman: Into the Bat-verse

Dante Olsen

as Bruce Wayne/Batman (Joker) in Batman: Into the Bat-verse

Liam Neeson

as Ra's al Ghul (Nolanverse) in Batman: Into the Bat-verse

J.K. Simmons

as Commissioner James Gordon (DCEU) in Batman: Into the Bat-verse

Cillian Murphy

as Scarecrow (Nolanverse) in Batman: Into the Bat-verse

Zach Galifianakis

as The Joker (Lego) in Batman: Into the Bat-verse

Ralph Fiennes

as Alfred Pennyworth (Lego) in Batman: Into the Bat-verse

Rosario Dawson

as Barbara Gordon/Batgirl (Lego) in Batman: Into the Bat-verse

Michael Cera

as Dick Grayson/Robin (Lego) in Batman: Into the Bat-verse

Will Arnett

as Bruce Wayne/Batman (Lego) in Batman: Into the Bat-verse

Burgess Meredith

as The Penguin (60's Batman) in Batman: Into the Bat-verse

Julie Newmar

as Catwoman (60's Batman) in Batman: Into the Bat-verse

Frank Gorshin

as The Riddler (60's Batman) in Batman: Into the Bat-verse

Robert Pattinson

as Bruce Wayne/Batman (The Batman) in Batman: Into the Bat-verse

Ben Affleck

as Bruce Wayne/Batman (DCEU) in Batman: Into the Bat-verse