Suggestions by @jasonyoung

Idris Elba

as Sam Wilson in Avengers: Age of Ultron (2005)

Jason Isaacs

as Ultron in Avengers: Age of Ultron (2005)

James McAvoy

as Pietro Maximoff in Avengers: Age of Ultron (2005)

Natalie Portman

as Wanda Maximoff in Avengers: Age of Ultron (2005)

Ethan Hawke

as Clint Barton in Avengers: Age of Ultron (2005)

Brad Pitt

as Thor in Avengers: Age of Ultron (2005)

David Duchovny

as Bruce Banner in Avengers: Age of Ultron (2005)

Milla Jovovich

as Natash Romanoff in Avengers: Age of Ultron (2005)

Pierce Brosnan

as Tony Stark in Avengers: Age of Ultron (2005)

Jon Voight

as Thaddeus Ross in MCU Phase 1-3 (1998-2009)

Robert Carlyle

as Emil Blonsky in MCU Phase 1-3 (1998-2009)

Sarah Jessica Parker

as Betty Ross in MCU Phase 1-3 (1998-2009)

David Duchovny

as Bruce Banner in MCU Phase 1-3 (1998-2009)

Wayne Knight

as Happy Hogan in MCU Phase 1-3 (1998-2009)

Stanley Tucci

as Phil Coulson in MCU Phase 1-3 (1998-2009)

Sam Raimi

as Director in Guardians of the galaxy (2004)

Mike Judge

as Howard The Duck in Guardians of the galaxy (2004)

Cliff Robertson

as Jason Quill in Guardians of the galaxy (2004)

Piper Perabo

as Meredith Quill in Guardians of the galaxy (2004)

Cameron Bright

as Young Peter Quill in Guardians of the galaxy (2004)