Is a clown always funny and friendly? Meet Pennywise, the Dancing Clown and star of the Stephen King horror novel "It", written in 1986. This terrifying clown is a Shape-shifter, who can only be seen by children and lives to haunt them in their nightmares. It can take on many forms, including werewolves, bats, leeches, and sharks and can embody any of a child's worst fears. Watch out for red balloons swaying in the breeze, kids. A perfect choice for Halloween!