Scariest fictional clowns

Pulcinella (often called Punch or Punchinello)

The Joker (nothing beats a smart villain except a smart, crazy clown villain)

Killer Clowns from Outer Space

Ubu Roi (King Ubu)

Buster - We all Scream for Ice Cream

Poltergeist clown

Poltergeist (TV) clown

Frenchy the Clown - National Lampoon

Adam the Clown - Dead Rising

Buggy the Clown a.k.a. Captain Buggy, the Clown Pirate - Buggy's Band of Pirates (scary for the kids)

Bob Gray or Pennywise - IT by Stephen King

Captain Spaulding - House of 1000 Corpses

The Clown - Spawn