Since he sadly committed suicide three years ago, many of his co-stars have taken the time to remember the late star. In a previous Instagram post, Pierce Brosnan opened up about what it was like to work with him on Mrs. Doubtfire.
"I am so proud to have been part of that movie and to have known the great Robin Williams," he said. In another interview he added, "I never really worked with Robin Williams, to tell you the truth. I worked with Mrs. Doubtfire. He was a magnificent human being and a beautiful person."
Similarly, Robin's Good Will Hunting co-star Matt Damon honored him on the 20th anniversary of the movie. “Oh, man, [I have] a lot of Robin Williams memories, good memories of him. And Ben [Affleck] said recently, it's weird, we always felt like we were going to, we had this incredible debt to pay him back,” he said. "And we thought there would be time to do that and just the abruptness of somebody leaving like that, that realization comes that you're never going to be able to pay back this incredible thing done for you. That movie got made because Robin said he wanted to do it. That changed the trajectory of our careers completely, forever." If one thing's for sure, you will be remembered forever, Robin.
Click through the gallery below to see Robin's greatest roles throughout his showbiz career — and read his co-stars' reactions to his tragic passing.