Helen York was a mortal History professor at Billie Jenkins' college in San Francisco. She was also a well-known philanthropist who dedicated her life to helping African nations.
Helen was eventually killed by a Grimlock, a demon that seek out those with powerful auras. Because of her work for charity and her dedication to Africa, Helen had a strong aura, which was why the Grimlock chose her as its victim. The night Helen was killed, she had helped organize a charity run to raise money to build a school in Africa. One her students, Violet Morgan, was crushed by the loss of her favorite professor.