Mark Ruffalo immediately went online to see what fans thought of his casting as The Hulk in 'Marvel Avengers Assemble' when the news was released, but immediately regretted it.
Unlike the rest of the characters in the ensemble film - which stars Robert Downey Jr, Chris Hemsworth and Scarlett Johansson - it was the first time Mark appeared as the part in a Marvel film, and he reveals he immediately regretted going online to see what fans had to say about it.
He said: ''I knew what my responsibility was. I felt it just by making the mistake of going online and reading some of the fanboy responses to the announcement that I was playing the next version of Bruce Banner. That was a mistake. I will never do that again.
''But, I've never had a role be more scrutinised and criticised, even before I'd shot a single frame.''
However it was not just the fans the 'Kids Are All Right' actor was nervous about - he was also intimidated by his fellow cast-mates.
He added to Collider.com: ''Coming onto the set with all of those guys was pretty daunting. Many of my heroes in life are in this cast. So, I knew that I had big shoes to fill, so to speak. It was tough, and I wish that I had a cool costume to wear the entire time, instead of a leotard that was painted like a Chinese checkerboard.''