'The Last Circus,' 'It,' 'The Simpsons': 13 Terrifying Killer Clowns‘Last Circus’‘The Last Circus’ features a gun-wielding clown. From the Joker to Evil Krusty, see more scary clowns. Marlow SternSenior Entertainment EditorUpdated Apr. 24, 2017 2:54PM ET / Published Aug. 17, 2011 9:03PM ET