The rock world is also mourning the death of the actor, with several musicians taking to Twitter with tributes.

Aerosmith drummer Joey Kramer: “Deeply saddened by the passing of Robin Williams Depression has no boundaries & makes no friends the world has lost one of the greatest #RIP.” (Aerosmith’s “Dude (Looks Like a Lady)” was heard in Mrs. Doubtfire.)

Motley Crue bassist Nikki Sixx: “Life is so very fragile. RIP Robin. You gave us all such joy. ;( “

Gene Simmons: “R.I.P. Robin Williams. A kind and generous man.”

Sharon Osbourne: “The entire Osbourne Family is grieving the loss of a kind, funny, generous and talented man, Robin Williams.”

Ozzy Osbourne: “Such a tragic loss. I will always have amazing memories of @RobinWilliams. Respect and love goes out to his family.”

Flea of the Red Hot Chili Peppers: ” R.I.P. Robin Williams. Grew up with that man, what beautiful gifts he gave to us.”

Bruce Springsteen collaborator Tom Morello: ” RIP fellow Illinois Entertainer-In-Arms Robin Williams. Thank you for bringing joy to so many with ur peerless wit.”