Filia is one of the playable characters in Skullgirls. She was the first character made playable in a demo of Skullgirls when the game was being made. Her homestage is Maplecrest.
She has been named the "protagonist/main character" of Skullgirls, although characters such as Marie, Parasoul, Valentine, Double and Painwheel all have more major roles than Filia herself. This is possibly because she has been used in most of the game's advertisements and cover artworks.
Filia (JP: フィリア) was once a normal school girl, until one night, her hair was possessed by the Parasite named Samson, resulting in amnesia.
She is said to be the granddaughter of Lorenzo Medici, although this has yet to be directly addressed in game.