Pennywise

Stephen King's shape-shifting cosmic entity chose the form of a clown because children trust clowns — and Tim Curry's 1990 TV performance was so effective it created an actual measurable increase in coulrophobia. Bill Skarsgard's 2017 reimagining added unsettling physicality — the drooling, the lazy eye, the contorted smile — that made Pennywise feel genuinely alien rather than merely creepy. Two actors, two eras, one unshakable cultural truth: clowns are terrifying, and It is why.