Robert Downey Jr says that Mark Ruffalo was the perfect actor to take on the role of Bruce Banner in Avengers Assemble.
Avengers Assemble sees a whole host of Marvel characters come together and this is the first outing for Ruffalo as the Hulk.
Speaking to Flicks and Bits Downey Jr said: "I'd always felt that Mark was the guy to play Bruce Banner.
"I think because there's something immensely introspective and affable about the guy, that makes that 'curse' or that 'opportunity' or that 'karma' that he has, which is not of his doing, but is his responsibility to manage in some way.
"He's just a really funny, quirky guy - but he's a straight shooter. That's probably the most important thing , you know? He was great to work with."
Downey Jr is reprising the role of Iron Man in the movie while Chris Hemsworth, Chris Evans, Scarlett Johansson and Jeremy Renner also star.
Avengers Assemble is released 30th April.
Tagged in Robert Downey Jr Mark Ruffalo Avengers