Suggestions by @reclaimer

Anthony Stewart Head

as Old Speedwagon in JoJo's Bizarre Adventure

Mark Mothersbaugh

as Composer in Doom Patrol

William H. Macy

as Dr. Otto Octavius in The Sinister Six

Max Landis

as Writer in The Fantastic Four

Joel Edgerton

as Kano in Mortal Kombat

Kevin Grevioux

as Goro in Mortal Kombat

Hoon Lee

as Shang Tsung in Mortal Kombat

William H. Macy

as The Shoveler in The Mystery Men

Juno Temple

as Dynamite Girl in The Mystery Men

Mark Metcalf

as Ratbat in The Transformers

Sinead Michael

as Zelda in The Legend of Zelda

Pablo Schreiber

as Dr. Jonathan Crane in Justice League

Margot Robbie

as Dr. Harleen Quinzel in Justice League

Lucy Fry

as Supergirl in Justice League

Graham McTavish

as Doctor Hugo Strange in Justice League

Tahmoh Penikett

as Superman in Justice League

Elijah Wood

as Plastic Man in Justice League

Christian Kane

as Wyatt Wingfoot in The Fantastic Four

Michael Sheen

as Alistaire Stuart in Captain Britain

Gregory Smith

as James MacDonald Hudson in Alpha Flight