He may have been one of Hollywood's most famous faces (and voices) but, upon his sad passing, there are still reams of little-known trivia about Robin Williams.
Williams was a fan of rugby union and formed a friendship with former winger Jonah Lomu, who left a tribute to the actor on Twitter.
During filming for Schindler's List, Steven Spielberg used to call Robin Williams and put him on speakerphone so he could tell jokes to the crew to cheer them up.
When auditioning for the role of Mork on Happy Days, Williams reportedly sat on his head in the interview when asked to sit down. The producers subsequently hired him because "he was the only alien who auditioned".
When graduating from high school, classmates voted Williams the least likely to succeed.
After Superman actor Christopher Reeve was paralysed in a horse-riding accident, Williams visited him in hospital - dressed up head-to-toe in doctor's scrubs while gesticulating in a Russian accent.
When he eventually pulled off his mask, Reeve said it was the first time he had laughed since the accident.
Williams used to work as a street mime in the 1970s when he was cutting his teeth as an actor.