Suggestions by @goatjoker

Ralph Fiennes

as Professor X in What characters should non MCU actors play in the MCU?

Charlie Heaton

as Harry Osborn in Future Marvel Character Casting

Sabrina Carpenter

as Black Cat in What characters should non MCU actors play in the MCU?

Viggo Mortensen

as Magneto in What characters should non MCU actors play in the MCU?

Joseph Morgan

as Captain Britain in What characters should non MCU actors play in the MCU?

Rami Malek

as Silver Surfer in What characters should non MCU actors play in the MCU?

Keanu Reeves

as Ghost Rider in What characters should non MCU actors play in the MCU?

Charlie Heaton

as Harry Osborn in What characters should non MCU actors play in the MCU?

Hayden Christensen

as Nova in What characters should non MCU actors play in the MCU?

Liam Neeson

as Galactus in What characters should non MCU actors play in the MCU?

Tom Holland

as Spider-Man in What characters should non MCU actors play in the MCU?

Sam Worthington

as The Thing in What characters should non MCU actors play in the MCU?

Phoebe Tonkin

as Millie Harris in Jumper 2

Charlie Heaton

as Actor#0 in Actors Who Should Play Harry Osborn For Marvel Cinematic Universe

Florence Pugh

as Regé-Jean Page in Actors (18+) who should play love interests of other actors

Kristen Stewart

as Charlie Cox in Actors (18+) who should play love interests of other actors

Hugh Jackman

as Jessica Chastain in Actors (18+) who should play love interests of other actors

Dakota Johnson

as Colin Farrell in Actors (18+) who should play love interests of other actors

Kathryn Newton

as Tye Sheridan in Actors (18+) who should play love interests of other actors

Heath Ledger

as Batman in The Batman (2002)