The Halloween Mask Girls are a group of seven young six-year-old female girls who wear Halloween costumes that hide their whole bodies. They may be spooky-looking on the outside, but on the inside, they're very friendly and caring. They live in a haunted house together and sleep in coffins. Their names are Eveline, Bellatrix, Samara, Theodora, Morgana and the twins, Sabrina and Seraphina. They share their house with six female bats and five female spiders, each of whom also wear costumes that hide their whole bodies.