<Ul> <Li> Susan Taylor (Morgan Fairchild)--Mindy's snooty ex-friend from high school who was only seen in Season 1 . In the episode "Mork's First Christmas", a glimpse into why Susan is such a shallow person was shown . </Li> <Li> Exidor (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 . As the leader of a cult called "The Friends of Venus", of which he was the only member, he regularly engaged in conversations with imaginary members of his cult (such as "Pepe" and "Rocco"), but was the only person who could see them . Most times he is found yelling at his imaginary cult . He makes the comment, "Entourages can be the pits!" Later, since the Venusians had abandoned him, he began to worship O.J. Simpson when Mork encountered him at the Boulder Police Station . He also had a plan to become "Emperor of the Universe" by becoming a rock - star; his musical instrument of choice was the accordion . Exidor appears to be something of a squatter, as on at least two separate occasions he is present in homes not his own . Once Mork visited Exidor at a very nice apartment where he supposedly lived with his imaginary girlfriend and her twin sister . Another time, he is "on vacation" in Mindy's family home, where he apparently believed there was a beach in the living room closet . ("Everybody out of the water! Can't you see that fin?") He eventually got married, in a "forest" (Mindy's attic). Mindy thought his wife would be imaginary, but she turned out to be a real woman named Ambrosia . Exidor became highly popular with audiences and prompted wild applause from the studio audience when entering a scene . </Li> <Li> Mr. Miles Sternhagen (Foster Brooks)--Mindy's boss when she gets a job at a local TV station . He is overbearing and demanding of Mindy when sober, but occasionally turns up drunk and cheerful (per Brooks' famous "drunk" act). </Li> <Li> Glenda Faye Comstock (Crissy Wilzak)--Mindy's friend and recent widow who becomes the love interest of Nelson and was only seen in Season 3 . </Li> <Li> Todd Norman "TNT" Taylor (Bill Kirchenbauer)--An obnoxious and arrogant womanizer . He later teaches Mork to drive at the FastLane Driving School . </Li> <Li> Cathy McConnell (Shelley Fabares)--Fred's new younger wife and Mindy's stepmother seen in Seasons 2 - 4 . </Li> <Li> Lola and Stephanie (Amy Tenowich and Stephanie Kayano)--Two children from the daycare center Mork works at later in the series during Season 3 . Lola is a young philosopher and Stephanie is a chubby girl who loves to eat . </Li> <Li> Billy (Corey Feldman)--A daycare - center child who appeared during Season 3 . He wants to be like his namesake Billy the Kid . Mork introduces him to the Orkan hero Squellman the Yellow . </Li> <Li> Bebo--Mork's ball - of - fur pet who spoke Orkan gibberish and was introduced and only seen in Season 3 . He was occasionally seen around the house and stood by Mork during his reports to Orson . </Li> <Li> Eugene (Jeffrey Jacquet)--A ten - year - old boy who takes violin lessons from Cora and befriends Mork during his appearances in Season 1 . </Li> <Li> Arnold Wanker (Logan Ramsey)--The landlord of Fred and Mindy's music store during Season 1 . He dies in Fred's music store, but Mork (misinterpreting the comments made to his wife) brings him back to life (a "one - in - a-billion" chance). </Li> </Ul> <Li> Susan Taylor (Morgan Fairchild)--Mindy's snooty ex-friend from high school who was only seen in Season 1 . In the episode "Mork's First Christmas", a glimpse into why Susan is such a shallow person was shown . </Li> <Li> Exidor (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 . As the leader of a cult called "The Friends of Venus", of which he was the only member, he regularly engaged in conversations with imaginary members of his cult (such as "Pepe" and "Rocco"), but was the only person who could see them . Most times he is found yelling at his imaginary cult . He makes the comment, "Entourages can be the pits!" Later, since the Venusians had abandoned him, he began to worship O.J. Simpson when Mork encountered him at the Boulder Police Station . He also had a plan to become "Emperor of the Universe" by becoming a rock - star; his musical instrument of choice was the accordion . Exidor appears to be something of a squatter, as on at least two separate occasions he is present in homes not his own . Once Mork visited Exidor at a very nice apartment where he supposedly lived with his imaginary girlfriend and her twin sister . Another time, he is "on vacation" in Mindy's family home, where he apparently believed there was a beach in the living room closet . ("Everybody out of the water! Can't you see that fin?") He eventually got married, in a "forest" (Mindy's attic). Mindy thought his wife would be imaginary, but she turned out to be a real woman named Ambrosia . Exidor became highly popular with audiences and prompted wild applause from the studio audience when entering a scene . </Li> <Li> Mr. Miles Sternhagen (Foster Brooks)--Mindy's boss when she gets a job at a local TV station . He is overbearing and demanding of Mindy when sober, but occasionally turns up drunk and cheerful (per Brooks' famous "drunk" act). </Li>

Was mork and mindy filmed in front of a live audience