Mark Ruffalo Says There’s ‘A Lot More Hulk’ in ‘‘Thor: Ragnarok’ One of the questions surrounding Captain America: Civil War was the noticeable absence of two of the mightiest Avengers: Chris Hemsworth’s Thor and Mark Ruffalo’s Hulk. In reality, they weren’t included because the screenwriters thought they were too powerful and would make any battle a short one. In terms of plot, Thor left at the end of Avengers: Age of Ultron to return to Asgard and Bruce Banner ghosted because he was afraid of hurting Black Widow.