Stephen King's fictional evil clown, 'Pennywise', was inspired by real-life events, including true crimes and phobias.
Coulrophobia, the fear of clowns, is a common phobia, with around 50% of adults experiencing some degree of apprehension around clowns.
Pennywise, a demonic supernatural entity that brutally slaughters children, creates carnage in its wake, would likely increase this percentage.
King's 1986 novel IT introduced the world to 'Pennywise', a character that has been the subject of nightmares for children and adults alike.
'Pennywise' is a product of Stephen King's creative imagination, but was inspired by real-life events and people, including a serial killer.
Author's summary: Stephen King's 'Pennywise' has a real-life basis.