Suggestions by @khabib

Chip Zien

as Howard The Duck in MCU (70/80s)

Lou Ferrigno

as Hulk in MCU (70/80s)

Reb Brown

as Captain America in MCU (70/80s)

Peter Hooten

as Doctor Strange in MCU (70/80s)

John Cena

as Cable in MCU's The Mutants

Nathan Jones

as Juggernaut in MCU's The Mutants

Ekaterina Samsonov

as Magik in MCU's The Mutants

Camren Bicondova

as X-23 in MCU's The Mutants

Taylor Swift

as Dazzler in MCU's The Mutants

Sofia Boutella

as Mystique in MCU's The Mutants

Poppy Drayton

as Psylocke in MCU's The Mutants

Ivan Zhvakin

as Colossus in MCU's The Mutants

Hillary Duff

as Madelyne Pryor in MCU's The Mutants

Jace Norman

as Havok in MCU's The Mutants

Jon Hamm

as Mister Sinister in MCU's The Mutants

Kaya Scodelario

as Polaris in MCU's The Mutants

Andrew Koji

as Sunfire in MCU's The Mutants

Domhnall Gleeson

as Banshee in MCU's The Mutants

Method Man

as Bishop in MCU's The Mutants

Miyako

as Jubilee in MCU's The Mutants