Suggestions by @castbot

Ryan Gosling

as John Constantine in Constantine (DCCU)

Robert Downey Jr.

as John Blake in The Dark Knight Trilogy (1985-1992)

Jon Heder

as Fred in Big hero 6 (2005)

Ryan Reynolds

as Ronald McDonald in Fast Food the Movie

Leslie David Baker

as Doc Louis in Super Smash Bros. Universe

Matthew Lillard

as Tony Stark in Avengers: Infinity War (Miscasted)

Andre Braugher

as FBI Agent James Fisher in The Young Assassin

Steve Carell

as Mad Hatter in DCEU

Javier Bardem

as Doctor Octopus in Spider-Man

Jon Hamm

as Green Goblin in Spider-Man

Joonas Suotamo

as Larry Bird in The 80s Movie

Jason Statham

as Victor Fries in Batman Reboot by Matt Reeves

Russell Brand

as Alfred Yankovic in Dare To Be Stupid

Jon Hamm

as Green Goblin in MCU (Phase 4)

Noah Centineo

as Human Torch in MCU (Phase 4)

Javier Bardem

as Doctor Octopus in MCU (Phase 4)

Nicolas Cage

as Lex Luthor in Superman: EarthRight

Ross Lynch

as Shulk in Super Smash Bros. Universe

Jason Momoa

as Knuckles the Echidna in Super Smash Bros. Universe

David Harbour

as Ganondorf in Super Smash Bros. Universe