Robert Downey Jr.

Tony Stark / Iron Man

Chris Evans

Steve Rogers / Captain America

Mark Ruffalo

Bruce Banner / The Hulk

Chris Hemsworth

Thor

Scarlett Johansson

Natasha Romanoff / Black Widow

Jeremy Renner

Clint Barton / Hawkeye

Tom Hiddleston

Loki

Clark Gregg

Agent Phil Coulson

Cobie Smulders

Agent Maria Hill

Stellan Skarsgård

Selvig

Samuel L. Jackson

Nick Fury

Gwyneth Paltrow

Pepper Potts

Paul Bettany

Jarvis (voice)

Alexis Denisof

The Other

Tina Benko

NASA Scientist