Robert Donner portrayed which character in the American TV sitcom "Mork & Mindy"?

"Mork & Mindy" is an American television sitcom that aired on American Broadcasting Company (ABC) from September 14, 1978, to May 27, 1982. A spin-off after a highly successful episode of Happy Days, "My Favorite Orkan", it starred Robin Williams as Mork, an extraterrestrial who comes to Earth from the planet Ork, and Pam Dawber as Mindy McConnell, his human friend, roommate, and eventual love interest.

The character Exidor is portrayed by Robert Donner, an odd man (with possible mental illness) who regards himself as a prophet. He often appears wearing a flowing white robe with a brown sash. He recognizes Mork as an alien, but nobody believes him.

Robert Donner (April 27, 1931 – June 8, 2006) was an American television and film actor. He was born in New York City on April 27, 1931. He was raised in New Jersey, Michigan and Texas. He spent four years in the United States Navy and was stationed in California. After he completed his military service, he settled in the Los Angeles area.

Donner's first role was an uncredited part in the 1959 John Wayne Western "Rio Bravo". He also appeared in the sequels (which formed a loose trilogy), "El Dorado" and "Rio Lobo". He also appeared in "Chisum", "The Undefeated", and "The Man Who Shot Liberty Valance". His best-known television roles were as the ex-convict/informant T.J. on "Adam-12", Yancy Tucker on "The Waltons" and as Exidor on "Mork & Mindy".