Susan D. "Sue" Snell is a fictional character created by Stephen King. She was in his first published novel, Carrie in 1973, and also appeared in the 1976 film, the 1988 musical, the 1999 film sequel, the 2002 television movie, and the 2013 film remake.
In every adaptation and portrayal of the character, she is a popular teenage girl dating Tommy Ross. After tormenting Carrie White in the locker room, Sue begins to feel remorse for her actions. She asks Tommy to do her a favor and take Carrie to the prom in an attempt to make Carrie feel accepted and to ease her own conscience. In this she has been described as the "godmother" in King's "dark modernization of Cinderella." The disaster that takes place at the high school prom is set in place when Tommy accepts.