Jason Voorhees is a fictional character from the Friday the 13th series. in the movie Young Jason fell (11 years old) out of a boat and died during a summer trip to Camp Crystal Lake, because the councilors were not paying attention.
A year after that on Friday the 13th a couple councilors were murdered, one is survived (alice). She know that Jason’s Mother (Pamela Voorhees) that killed all councilors. Pamela Voorhees took revenge on the councilors because they didn’t pay attention to her child.
Alice (the one councilor who survive from Pamela murder) decapitated Pamela. Jason saw his mother being decapitated and took revenge on everyone.
Jason now constantly seeks bloody vengeance by ruthlessly disemboweling camp counselors, negligent authority figures, drug addicts, prostitutes, teenagers, and anybody who is either drinking, partying, having sex, breathing, or generally just hanging around being not dead. When he’s not living underwater like an undead, sword-swinging Godzilla, Voorhees enjoys stabbing people in the gonads, breaking windows, and/or getting struck by lightning.