We don't have a biography for Billy yet. Hang in there, or go ahead and contribute one.
Appearances
Mork & Mindy
Guest cast, played by Corey Feldman
- Episode 3x05: Mork the Prankster (Dec 4, 1980)
- Episode 3x07: Gunfight at the Mork-Kay Corral (Dec 18, 1980)