There's a lot of ego - super, alter and otherwise - in this comic book adaptation of the Marvel series The Avengers, which sees the formation of a superhero supergroup to save the world from a vengeful god.
There's also a lot of action and humorous ribbing between these Marvel-ites, who've been brought together by Nick Fury (Jackson), director of international peace keeping organisation S.H.I.E.L.D.
Tony Stark, aka Iron Man (Downey jnr), might have been told in Iron Man 2 he wasn't a suitable candidate for The Avengers, but when Norse God Thor's adopted brother Loki (Hiddleston) hits town threatening to conquer Earth with his alien army the entry criteria is loosened somewhat.
Joining Iron Man on this mission is Captain America ( Evans), Thor (Hemsworth), and the Incredible Hulk, with Mark Ruffalo taking over from Edward Norton as the angry green guy. They're assisted by S.H.I.E.L.D agents Black Widow (Scarlett Johansson), Agent Coulson (Clark Gregg) and Hawkeye (Jeremey Renner).
We've seen superhero collectives before in X-Men and Fantastic Four. But what makes this group unique is they're all from different franchises, different eras and even different planets.