Jimmy Mortimer is a character in Friday the 13th: The Final Chapter, played by Crispin Glover.
In 1984, after an unsettling breakup with his girlfriend, Jimmy joins his friends on a trip to a summer house at Crystal Lake, not knowing the murderous Jason Voorhees is still on the loose. His friend Ted Cooper teases him as being a "dead fuck" and convinces him to find someone new.
Sure enough, the gang meets local twins Tina and Terri Moore. Jimmy proves he is not a "dead fuck" after he sleeps with Tina. He then goes to gloat to Ted and celebrate with a bottle of wine. While searching for a corkscrew, Jason appears from the shadows and slams it on Jimmy's hand before hitting him in the face with a meat cleaver, killing him.
In Freddy vs. Jason vs. Ash, Freddy Krueger summons Jimmy, along with other victims of Jason, as Deadites to defeat Jason. The Deadites are defeated by Jason after he reclaims his machete.