Suggestions by @mr_chameleon

Jane Seymour

as Jane Foster in Thor (1981)

Christopher Walken

as Phil Coulson in Thor (1981)

Sam Rockwell

as Riddler in The Batman (2002)

Harvey Keitel

as Carmine Falcone in The Batman (2002)

Ray Winstone

as Penguin in The Batman (2002)

Jeremy Irons

as Gil Colson in The Batman (2002)

Lisa Bonet

as Catwoman in The Batman (2002)

Val Kilmer

as Captain America in MCU 90's

Mel Gibson

as Michael De Santa in Grand Theft Auto V

Isabelle Adjani

as Liz Sherman in Hellboy (1984)

John Gielgud

as Trevor Bruttenholm in Hellboy (1984)

Clint Eastwood

as Hellboy in Hellboy (1984)

Matthew Broderick

as Marty McFly in Back to the Future (Alternate Cast)

James Earl Jones

as Zuri in Black panther (1991)

Blair Underwood

as W'Kabi in Black panther (1991)

Ruby Dee

as Ramonda in Black panther (1991)

Jack Nicholson

as Doc Brown in Back to the Future (Alternate Cast)

Ralph Macchio

as Marty McFly in Back to the Future (Alternate Cast)

Denzel Washington

as T'Challa / Black Panther in Black panther (1991)

Sean Young

as Tina Goldstien in Fantastic Beasts (1990s)