Look at these amazing actors. Look at the actors' eyes and then at the characters. (Might as well ignore the top; I don't know why they gave Tony Stark two pictures of himself but they're the same.) The actors look playful, but then when in character they are suddenly so changed.....look at Captain America - so starkly different from the fun loving Chris. LOOK AT TOM SMIRKING
Thor: he was trying to pull Mjolnir out of the ground with his pick-up. The Avengers: he was being interviewed at the end and said something along the lines of "superheros in New York? Give me a break." He also appears in the Spider-Man ride at Universal Studios.