Billy Jean Sparks is a pre-made Sim who works as a Communications professor at Sims University. She can be made playable by either marrying her or by asking her to move in.
Billy Jean is a level 10 Nerd. She shares the same surname as the Sparks family in Lucky Palms, although there is no evidence to suggest that the two are related.
- Her traits and lifetime wish are the same as Debbie Richards, who is also a professor at Sims University.
- Her name is possibly a reference to the Michael Jackson song Billie Jean.
- A book named "Basic Body Types and The Sports That Love Them" was written by her.