Robin Williams' death rocked Twitter on Monday, with many remembering the star for his comedic performances.

The 20th century has given us an impressive amount of superstars. Think of Marilyn Monroe, Audrey Hepburn, Muhammad Ali, Salvador Dali, John F. Kennedy and all the great people who left their mark in the history of humanity.

One man with a thousand voices brought joy to millions—but could not sustain it in himself

Robin Williams with a Tab, wearing a blue and white print shirt; circa 1970; New York.

Robin Williams performing at the Greek Theater in Berkeley, Calif. Bread and Roses Oct. 9th 1981 Image By: Tim Mosenfelder/ImageDirect

Robin Williams spent his life trying to escape his childhood fears. He was haunted by the memory of the dark, lonely and frightening attic in his parents’ grand Michigan house.

Ever the comedian, Robin Williams was never one to be afraid of doing something new, here he can be seen debuting as the first male cheerleader for the Denver Broncos in 1979. The late actor briefly joined the Broncos cheering squad in November 1979, donning a white sequined mini-skirt, go-go boots and an orange neckerchief, then prancing in front of a crowd that the Denver Post pegs at around 74,000 people. In doing so, Williams became the first male Broncos cheerleader in history, and likely the most entertaining Broncos cheerleader of all time, regardless of gender. Williams pulled the stunt for the 37th episode of “Mork & Mindy,” a comedy show set in nearby Boulder, Colorado, in which Williams plays Mork, an alien sent to investigate Earth. In the episode, Mork joins the squad at the urging of his adoptive sister’s cousin, Nelson, who believes his political career will be aided by Mork’s new gig. Perhaps inspired by Williams’ antics on the sidelines, the Broncos beat the Patriots 45-10. (via The Huffington Post)

In March 2011, TIME interviewed Robin Williams. Here are 10 exchanges that didn’t fit the first time around

Dozens of neighbors and well-wishers stood outside Robin Williams' Tiburon home late...

From Hollywood to New York and everywhere in between, see what your favorite stars are up to

To celebrate Robin William's life, we are taking a look at the beloved actor's career in photos.

Robin Williams' 10 Most Memorable Quotes

In 1974, 22-year-old Daniel Sorine trained his camera on two mime artists performing in New York's Central Park. One was Robin Williams