While in the original 'Friday', it was his creepy mum behind the killings, but in the many, many sequels and the remake, Jason took centre-stage.
A neglected kid who ‘drowned’ at summer camp, he came back to life with a vengeance (and a hockey mask) to punish fun-loving camp counsellors who were too busy indulging in various vices to notice the increasing body count.
Killer line: (as spoken by Mrs Voorhees) "Kill her, Mommy! Kill her! Don't let her get away, Mommy! Don't let her live!"