Felicia Day is an American actress, writer, and producer known for her work in the world of science fiction and fantasy. She gained fame for her role as Charlie Bradbury in the popular TV series Supernatural and as the creator and star of the web series The Guild, which humorously explores the lives of gamers. In addition to her acting career, Felicia is a passionate advocate for the geek community and has authored books, including her memoir, You're Never Weird on the Internet (Almost). She has also appeared in various other shows and movies, making her a beloved figure among fans of nerd culture.