Onder andere met: 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)