Jade Duke (Selma Blair) is a minor recurring villainess from the short-lived Heathers TV series. She was a stripper and the stepmother of Heather Duke, having married his father (who, by the current events, was confined to an iron lung) after he visited her strip club and wooed her with his money; openly admitting in the present the fact that she only married Mr. Duke to eventually inherit his wealth.
Jade's first appearance in the series' 2nd episode, "She's Going to Cry", quickly displayed the antagonistic relationship she had with her stepson, mocking him when no one arrived at the funeral party he organized for Heather Chandler. The 5th episode, "Reindeer Games", also revealed that Jade had criminal ties when she was approached at work by Jason "J.D." Dean, who was looking to obtain an illegal gun. While initially wary to help J.D., Jade was convinced when J.D. gave her $100, directing him to a weapons dealer known as Dr. Destiny.
The following episode, "Hot Probs", has Jade arriving at the school for a meeting after Chandler intentionally struck Duke with her car, getting offended by Martha Chandler judging her for her choice of clothing. After revealing how she met her husband, Jade revealed that she was initially going to be on Martha's side due to her disdain for her stepson, but was now convinced that the only suitable punishment for Chandler would be expulsion. Jade was appeased, however, when Martha promised to confiscate her daughter's car and paid Jade $20, with the callous stepmother responding to Duke's outcry at his dignity being worth $20 to her by giving Martha half the money back. Jade's final appearance came in the series' penultimate episode, "I'm a No-Rust-Build-Up Man Myself", dropping Heather off at the Snappy Snack Shack to get her cigarettes, hot dogs, and slushies.
While in the store, however, Duke was approached by J.D., with his use of the word "myriad" causing him to realize he was responsible for killing his boyfriend, Kurt Kelly. Alarmed, Heather attempted to get his stepmother to flee, only for Jade to demand he go back inside to get her stuff. When Heather explained that J.D. was intent on killing him, the evil Jade had Heather confirm that he'd said before driving away without him. Jade's callousness resulted in Heather accidentally dying while attempting to flee from J.D., with Jade's fate being left unknown.