Suggestions by @sansyboi

Daniel Mays

as Gottfried Leibniz in Newton

Cillian Murphy

as Sir Isaac Newton in Newton

Dave Franco

as Flash in Justice League

Jake Gyllenhaal

as Tarzan in Tarzan (Live-Action)

Troy Baker

as Steve Trevor in Wonder Woman The Animated Series

Jeremy Irons

as Ares in Wonder Woman The Animated Series

Susan Eisenberg

as Wonder Woman / Diana Prince in Wonder Woman The Animated Series

David Paetkau

as Metallo in Legion Of Doom

Amber Midthunder

as Tiger Lily in Peter Pan

James Wan

as Director in Peter Pan

Martin Freeman

as Mr. Smee in Peter Pan

Andy Serkis

as Captain Hook in Peter Pan

Joaquin Phoenix

as Captain Hook in Peter Pan

Jennifer Carpenter

as Martha Wayne in Batman

Sienna Miller

as Maggie Sawyer in The Batman/Superman: World's Finest

Shaggy

as Sebastian in The Little Mermaid (The Live-Action Remake)

Terry O'Quinn

as Vulture in Spider-Man

Louise Brealey

as Alphys in Undertale

Neil Patrick Harris

as Papyrus in Undertale

Jared Leto

as Mettaton in Undertale