Suggestions by @mikeypascual

Hugo Weaving

as Johann Schmidt in Arnim Zola (early 2010's)

Stephen McFeely

as Writer in Arnim Zola (early 2010's)

Christopher Markus

as Writer in Arnim Zola (early 2010's)

Kevin Feige

as Producer in Arnim Zola (early 2010's)

Toby Jones

as Arnim Zola in Arnim Zola (early 2010's)

Alan Silvestri

as Composer in Arnim Zola (early 2010's)

Joe Johnston

as Director in Arnim Zola (early 2010's)

Jor-El

as Bradley Cooper in If Marvel actors had DC roles

Gilda Dent

as Scarlett Johansson in If Marvel actors had DC roles

Mahershala Ali

as Waist of a Character in Phase 5's Ups and Downs

Denzel Washington

as T'Challa in Kang Dynasty (2002 adaptation)

Michael Biehn

as Clint Barton in Kang Dynasty (2002 adaptation)

Catherine Zeta-Jones

as Natasha Romanoff in Kang Dynasty (2002 adaptation)

J.K. Simmons

as J. Jonah Jameson in Marvel's Contest of Champions

Pierce Brosnan

as Tony Stark in Kang Dynasty (2002 adaptation)

Brad Pitt

as Steve Rogers in Kang Dynasty (2002 adaptation)

Jennifer Connelly

as Wanda Maximoff in Kang Dynasty (2002 adaptation)

Alan Silvestri

as Composer in Kang Dynasty (2002 adaptation)

Stan Lee

as Producer in Kang Dynasty (2002 adaptation)

Laurence Olivier

as Steven Spielberg in The Collabs We Didn't Get