A vengeful woodsman
It is revealed in Friday the 13th Part 2 that Jason somehow survived being tossed into the lake as a boy, and has been living in a crude cabin in the woods. After her encounter with Alice, Jason discovers his mother's body and falls into a murderous, vengeful rage.
Jason begins killing those who occupy Crystal Lake, and after a battle with Tina, is dragged back to the bottom of the lake by an apparition of Tina's father. Friday the 13th Part VIII: Jason Takes Manhattan (1989) sees Jason return from the grave, brought back to life via an underwater electrical cable.
While being bullied by the other campers, Jason attempted to escape from his tormentors, but the cruel children caught up to him on the dock and threw Jason into the lake where he presumably drowned. His last words were for his mother, then for anyone in earshot to help him.
At age 11, he seemingly drowned in Crystal Lake, but survived and killed people who trespassed at Crystal Lake though he killed Alice Hardy in revenge after witnessing said camp counselor kill his mother, Pamela Voorhees, who had previously killed several camp counselors.
This worm-like creature is known as Hellbaby, and it is responsible for keeping Jason from feeling pain. In one of the movies—Friday the 13th Part VI: Jason Lives—Jason also became a zombie, so he is essentially immortal.
The abuse continued for six months, and Joker even let other Arkham inmates beat Jason. Joker also branded the letter "J" on Jason's left cheek.
Jason was rendered mute after barely surviving his near drowning at the age of 11. He was slightly mentally challenged before then and the fact that he was abused by the other campers made it worse. As shown in flashbacks during Freddy vs.
His death is the golden chainsaw in Dead Meat's kill count for the 4th film. Freddy vs. Jason has established that Jason's weakness is water, since he died by drowning (although he was shown in water in some films).
Noticing her resemblance to his mother, Jason decided to spare Whitney, but kept her locked up in his underground lair. Weeks later, after breaking down over the loss of his mother, Jason noticed the locket on Whitney's neck and took it from her.
However, he somehow popped up in one piece back at Crystal Lake at the start of Part IX. Then he was blown to bits, although his heart continued to beat. The living heart allowed him to possess living humans. Then we learn Jason can be born again through another Voorhees, and that only a Voorhees can kill him forever.
Total kills
Since Jason's first murder in Friday the 13th: Part II--in 1981--he's killed 163 people, and even more if you count the people aboard the space station blowing up in Jason X or those who died when the ship sank in Jason Takes Manhattan.
For the majority of the Friday the 13th franchise, Jason had almost no weaknesses. However, later films chose to give him a crippling fear of water. This was due to the circumstances of his death when he drowned in Crystal Lake as a child.
Basically, Michael killed his sister Judith because of a curse that was placed on him. A weirdo doctor thought it would be chill to cast this curse, even though it results in death and chaos over a long course of time. Michael simply serves as a killing machine to keep the cult of thorn thriving.
In “Jason Goes To Hell,” it's established that Jason is kind of an animated corpse that stays alive by killing others because his mother used witchcraft to reanimate him. Considering Jason's mom was insane in the first movie, this makes sense.
Sexual Acts Trigger Him
This is especially made clear following the film of Jason X, where it was what roused him out of his initial slumber. According to Todd Farmer, the writer of the film, he liked the idea of the character being awoken as a result of the act.
Bullet Immunity: Jason is completely immune to bullets; he was brought down by a shotgun but still kept getting up. Pain Immunity: In his undead state, Jason's pain receptors no longer exist due to being a corpse. He is shown to be able to endure extreme amounts of physical harm without slowing down at all.
According to IMDb, composer Harry Manfredini's film score is meant to sound like young Jason's voice saying "kill, kill, kill; mom, mom, mom," inspiring her to go on a killing spree. Manfredini created the effect by speaking the syllables "ki" and "ma" into a microphone running through a delay effect.
According to IMDb, composer Harry Manfredini's film score is meant to sound like young Jason's voice saying "kill, kill, kill; mom, mom, mom," inspiring her to go on a killing spree. Manfredini created the effect by speaking the syllables "ki" and "ma" into a microphone running through a delay effect.
Jason being supernatural all along now explains how he developed super strength, invulnerability. And what we previously thought was Jason just knowing shortcuts and being extremely lucky when chasing people, were actually teleportation powers. Indeed he does appear to teleport in subsequent movies.
He continues by explaining how Jason also suffers from Schizophrenia and Dissociative Identity Disorder. TylersSoap even gives a reason for why Jason wears his hockey mask, which is to dissociate himself from the brutal murders he commits.
Internally, he knew why: He didn't want to confront the monster Jason had become. The young man he had taken off the streets had been twisted up into perversion of everything Batman stood for. He had in essence become something just as bad, if not worse, than Joe Chill.
As the Red Hood, Todd terrorizes Gotham and leads Batman on a hunt to find out who is behind the mask. In this story, Jason gets his revenge on the Joker by beating him with a crowbar the same way the Joker did to him. However, he also expresses his anger and need for revenge against Batman, who didn't save him.
The vote was set up in the four-part story "A Death in the Family" that was published in Batman #426–429 in 1988. At the end of Batman #427, Jason was beaten by the Joker and left to die in an explosion.