Aww - Hear Mark Ruffalo's Cute Story About Visiting His Daughter's Superhero Club

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Mark Ruffalo and Scarlett Johansson are back in action in Avengers: Age of Ultron, and when we sat down with the pair to talk about their superhero sequel, they unexpectedly showed off their shared love of singing.

Posted on April 21st, 2015, 5:45pm by Sugar Inc. - PopSugar Length: 1 minutes 19 seconds