Mark Ruffalo shared photos of his 23-year-old son, Keen, and fans can’t get over their uncanny resemblance. “Happy Birthday, ...

"Don't skip leg day," Ruffalo joked next to the photos Ale Russian is a contributing ... Now we know what a mash-up of Mark Ruffalo and Hulk would look like — and it’s hilarious.

Emmy winner Mark Ruffalo will return to TV with the upcoming family comedy “Hal & Harper.” Here's all you need to know about ...