Jason Voorhees is the main antagonist of the Friday the 13thfranchise. He appears as the posthumous overarching character of the original Friday the 13th, the posthumous overarching antagonist of Friday the 13th: A New Beginning, the main antagonist of every other entry and Friday the 13th: The Game and the titular secondary antagonist/anti-villain of Freddy vs. Jason. He is also the main character of the video game Friday The 13th: Killer Puzzle, along with several comics and novels.
He is a deformed serial killer who is known for wearing a hockey mask to cover his deformities and killing those who dare to step foot in Crystal Lake out of vengeance for his mother Pamela whom he witnessed being decapitated. When he was a human, Jason was exceptionally durable and difficult to kill, but he could still feel pain and eventually was brought down by Tommy Jarvis, who continuously hacked away at him with his own machete. However, this would not be the end for years later, he'd be brought back from the dead by complete accident by Jarvis as an undead revenant which granted him supernatural abilities. Jason is also notable for using a machete as his preferred weapon with a close second being an axe, but he also has been known to use just whatever item he finds lying around and even his bare hands.