Molly Cule, voiced by Wynonna Judd, is a famous rock singer and one of the original Frizzlettes (Ms. Frizzle's old band she used to tour with). She's Wanda's favorite singer. She appears in Meets Molly Cule, and a photo of her hangs in Ms. Frizzle's house in Gets Charged.
Molly: Good, good (gasps) not good! There's still a speck of tar on my car. Wanda: (gasps too) There is?!
Arnold: What is it made of Ms. Cule? Molly: That's my little secret, Sugar.
Ms. Frizzle: And everything in the world is made up of molecules. Phoebe: Well,if everything is made up of molecules, wouldn't the tar be made up of molecules too? Ms. Frizzle: Right on target Phoebe!
Molly: Oh no, you don't Sugarpod. Yeah! That nasty tar is gone, gone, gone!