The Creep Sisters are a pair of 9-year-old identical twin sisters who love Halloween so much, their house is haunted. Their names are Clarissa and Clara, and they always wear very spooky costumes that hide their whole bodies, including their faces. The twins live together with their 34-year-old mother Chloe and 9 female bats that can speak fluent English named Echo, Twilight, Bella, Nocturne, Boo, Flutter, Vampire and a pair of identical twin bats named Starlight and Moonlight.