Jeff Dunsberry is a character in Friday the 13th Part II, played by Bill Randolph.
Jeff and girlfriend Sandra Dier visit Camp Crystal Lake in the Summer of 1984 on a counselor program. Jeff and Mark Jarvis are playing a game before Sandra can coax him away to have sex. Jason Voorhees enters the house and grabs a spear, he walks upstairs and enters the room where Jeff and Sandra are in bed. Sandra sees Jason and gasps but Jeff does not see him. Jason spears them both with such force that the spear goes through the bed to the floor killing them both instantly.
Jeff's body is seen hung up on the door discovered by Vickie Perry before Jason stabs her with a kitchen knife.