Suggestions by @sonictiger

Bear McCreary

as Composer in Iron Man: The Beginning

Lana Wachowski

as Producer in Iron Man: The Beginning

Steven Caple Jr.

as Director in Iron Man: The Beginning

sonictiger

as Writer in Iron Man: The Beginning

David Dastmalchian

as "The Scientist" in Iron Man: The Beginning

Spoiler

as "The Scientist" in Iron Man: The Beginning

Donnie Yen

as "The Mandarin" in Iron Man: The Beginning

Jack Black

as Harold Joseph "Happy" Hogan in Iron Man: The Beginning

Bradley Cooper

as Agent Phil Coulson in Iron Man: The Beginning

Rebecca Ferguson

as Agent Maria Hill in Iron Man: The Beginning

Jeffrey Wright

as Nick Fury in Iron Man: The Beginning

Josh Brolin

as Obadiah Stane in Iron Man: The Beginning

John David Washington

as James "Rhodey" Rhodes in Iron Man: The Beginning

Emma Stone

as Virginia "Pepper" Potts in Iron Man: The Beginning

Donald Glover

as Anthony "Tony" Stark in Iron Man: The Beginning

Hawkeye

as "Case Files" in Captain America: The Spirit of A Hero

Thor Odinson

as "Case Files" in Captain America: The Spirit of A Hero

Bruce Banner

as "Case Files" in Captain America: The Spirit of A Hero

Black Widow (Natasha Romanoff)

as "Case Files" in Captain America: The Spirit of A Hero

Tony Stark

as "Case Files" in Captain America: The Spirit of A Hero