Suggestions by @kissmethardy

Luke Evans

as Prince Barin in Flash Gordon

Wyatt Russell

as Flash Gordon in Flash Gordon

Justin Lin

as Director in Flash Gordon

Simon Pegg

as Writer #2 in Flash Gordon

Doug Jung

as Writer in Flash Gordon

Justin Hawkins

as Composer in Flash Gordon

Thomas Robinson Harper

as Choreographer in Flash Gordon

Taika Waititi

as Producer in Flash Gordon

Sam Raimi

as Director in Monster Mash!

Vincent D'Onofrio

as Herbert Hoover in The 74

Clark Gregg

as Calvin Coolidge in The 74

Brian Cox

as Warren G. Harding in The 74

Kyle MacLachlan

as Woodrow Wilson in The 74

Kelsey Grammer

as William Howard Taft in The 74

Dev Patel

as Mowgli in Fables

Ross Lynch

as Michelangelo in Teenage Mutant Ninja Turtles

Tom Holland

as Donatello in Teenage Mutant Ninja Turtles

Charlie Heaton

as Raphael in Teenage Mutant Ninja Turtles

Mackenyu

as Leonardo in Teenage Mutant Ninja Turtles

Daniel Craig

as Brian Braddock in X-Men