Following the release of Friday the 13th (1980), Adrienne King had numerous encounters with an obsessive fan. The situation escalated into a stalker case, and she decided to avoid any further acting opportunities. She has not done any on-screen film work since, but has done voice over work on several films more than 15 years later.
According to co-producer Dennis Stuart Murphy, the idea to have Jason wear a burlap sack over his head in Part 2 came from their costume designer, who figured it was the type of readily available item Jason could have conceivably and easily procured.
In the scene when Jason crashes into the window and grabs Ginny, the actor, Warrington Gillette was actually hurt. He tried to break into the window, only it didn't break, and he ended up banging his head really hard on the glass.
A shot of the infamous double-impalement was cut to avoid an "X" rating, yet a gory still photo of this censored shot appears on the back of the videocassette box. The footage of the censored portion was finally recovered in 2020 from an old VHS of the gore shots that Carl Fullerton kept for his portfolio and was included on the Scream Factory deluxe collection of the films.
Warrington Gillette's agent told him he had a part for a Camp Counselor for him (Paul), and he auditioned but didn't get the part. However, they liked him, and knew he had gone to stunt school, so they asked him to be Jason.