The Hulk is the most difficult Marvel property because it's always about balance. Is he a monster? Is he a hero? Are you going to root for a protagonist who spends all his time trying to stop the reason you came to the movie from happening? It's always a dance
Joss WhedonWhen you see these characters like Captain America or Thor, laughing at their own situation or about how strange they are, then you are able to accept more readily that it's fine to wear a cape. You can also accept that it's fine to be enormous and green, or to shoot arrows at aliens racing through the sky. It all makes sense if you've been able to laugh at it and with it.
Joss Whedon