Billy Warlock got his role on Happy Days by playing Mork's stunt double
After roller skating for Robin Williams, he became a soap opera regular.
For decades, Dick Warlock worked as the stunt double to Kurt Russell on films like Escape from New York, The Thing and Big Trouble in Little China. He also happened to play the slasher Michael Myers in Halloween II (1981). Elsewhere, the man of action even appropriately appeared in the movies Body Double and The Stunt Man. He got his start back in 1968 as a stunt driver in The Love Bug.
Stuntwork ran in the Warlock blood. Dick's son Billy picked up the family trade. With a little help from dad.
In the season-three Mork & Mindy episode "Dueling Skates," Mork challenges "Wheels Simpson" to a roller-skating road race. Billy Warlock picked up his first screen work as the stunt double to Robin Williams in the episode. We are assuming that would be the shots in which we see "Mork" racing down highway hills.
As you know, Mork & Mindy was a spin-off of Happy Days, both produced by Garry Marshall. Billy Warlock's stunt-double work put him on the radar of Marshall.
As Happy Days was entering a new decade, the sitcom evolved through casting changes. By season nine, familiar regulars like Ron Howard and Don Most had left the show. Fonzie was teaching high school, seen in blazers as often as leather jackets. The stories shifted focus to characters like Jenny Piccalo (Cathy Silvers) and Roger Philips (Ted McGinley), Marion Cunningham's nephew.
At the end of season nine, the writer tossed in another nephew, Roger's younger brother, Flip. He made his debt in an episode titled, well, "Hello, Flip."
Flip was perhaps best remembered for his bare midriff, as he was fond of wearing cut-off tops. According to the book Happier Days: Paramount Television's Classic Sitcoms, 1974-1984, the young Warlock earned his shot at an audition through his prior work on Mork & Mindy.
Warlock made the most of his first recurring television role. He made enough of an impression to forego stuntwork like his pops and stick with acting. By the end of the Eighties, he was a regular on Baywatch. Around the turn of the millennium, Warlock made the jump to daytime, landing gigs on soap operas, appearing in hundreds of episodes of Days of Our Lives and General Hospital. Later, he appeared on As the World Turns and One Life to Live. He kept his bellybutton mostly covered and the roller skates in the closet.