Popsugar Celebrity Celebrity Friendships Avengers Cast Instagram Pictures 54 Photos of the Avengers Gang That Prove They're 1 of the Closest Casts in Hollywood 24 April 2019 by Monica Sisavat Solís View On One Page Photo 16 of 54 ADVERTISEMENT () Start Slideshow View this post on Instagram Happy Birthday, @robertdowneyjr! Thank you for your kindness, leadership, and generosity all 50 years. You are the best 💚 A post shared by Mark Ruffalo (@markruffalo) on Apr 4, 2019 at 6:11am PDT Share This Link Copy ← Use Arrow Keys → 16 Previous Next Start Slideshow Celebrity FriendshipsCelebrity InstagramsThe Avengers