Known best for his collaboration with fellow American comedian Andy Kaufman, this stage and screen entertainer sometimes took on Kaufman's famous Tony Clifton persona. He also penned a 1999 expose titled Andy Kaufman Revealed!
In his 2014 book Andy Kaufman: The Truth, Finally, he claimed that Kaufman's death was staged and that the comedian was still alive.
Beyond the fact that he was born and raised in the United States, little is known of his personal life.
He was portrayed by Paul Giamatti in a 1999 Andy Kaufman biopic titled Man on the Moon.