Suggestions by @jasonyoung

Andy Serkis

as Dr. List in Avengers: Age of Ultron (2005)

Alfred Molina

as Baron Strucker in Avengers: Age of Ultron (2005)

Ian McKellen

as Erik Selvig in Avengers: Age of Ultron (2005)

Sandra Oh

as Helen Cho in Avengers: Age of Ultron (2005)

Vincent Cassel

as Ulysses Klaue in Avengers: Age of Ultron (2005)

Jennifer Connelly

as Maria Hill in Avengers: Age of Ultron (2005)

Eddie Murphy

as James Rhodes in Avengers: Age of Ultron (2005)

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)