Concept arts from Avengers: Age of Ultron

Scarlett Johansson: Natasha Romanoff/Black Widow
Aaron Taylor-Johnson: Pietro Maximoff/Quicksilver
James Spader: Ultron (voice)
Elizabeth Olsen: Wanda Maximoff/Scarlet Witch
Chris Evans: Steve Rogers/Captain America
Chris Hemsworth: Thor
Robert Downey Jr.: Tony Stark/Iron Man
Jeremy Renner: Clint Barton/Hawkeye
Samuel L. Jackson: Nick Fury
Mark Ruffalo: Bruce Banner/The Hulk

Director: Joss Whedon