Right now, Mark Ruffalo is like a lovable pet dog with an unfortunate habit of shitting on the rug. You want to be angry at him, but he's just so damn sweet and likeable that you can't muster up any anger. That's the situation Marvel Studios and the Russo Brothers are in, with Ruffalo's reputation as a one-man spoiler machine jeopardizing their carefully laid marketing plans for Avengers 4, which led the Infinity War directors to jokingly sack him via Twitter.