Cast and credits of The Avengers: Assembling the Ultimate Team

Joss Whedon
Himself - Director

Robert Downey Jr.
Himself - 'Tony Stark' / 'Iron Man'

Chris Hemsworth
Himself - 'Thor'

Mark Ruffalo
Himself - 'Bruce Banner' / 'Hulk'

Tom Hiddleston
Himself - 'Loki'

Chris Evans
Himself - 'Steve Rogers' / 'Captain America'

Kevin Feige
Himself - Producer

Scarlett Johansson
Herself / Natasha Romanoff / Black Widow

Samuel L. Jackson
Himself - 'Nick Fury'

Clark Gregg
Himself - 'Agent Phil Coulson'

Cobie Smulders
Herself - 'Agent Maria Hill'