The H.I.V.E. Headmistress appeared first in the episode Final Exam, where she was promoting three of her graduated students (Jinx, Gizmo and Mammoth) to Slade as part of a business deal. He ordered them to defeat the Teen Titans, which they failed at doing. She told Slade later that for their failure, the three students would be "strictly disciplined." However, Slade told her they've done well, because all he wanted them to do was to mention his name to Robin.
When the H.I.V.E. Academy was seen again, her position of headmistress had been usurped by Brother Blood, and she was reportedly missing. At some unknown point, she became romantically involved with Wintergreen, Slade's butler. She made a cameo in The Lost Episode, where she is seated in the audience beside Wintergreen and Mad Mod.The Headmistress later resurfaced as a recruit in the Brotherhood of Evil. In the final battle between the combined forces of the Teen Titans and the Brotherhood of Evil, she was seen fighting alongside Wintergreen. She was ultimately defeated and flash-frozen along with most of the other villains in the Brotherhood.
Powers and abilities
The H.I.V.E. Headmistress appears to have neither superpowers nor any extraordinary physical or athletic capabilites. She appears, however, to be skilled in the fields of administration.
- In her only speaking role in Final Exam, the Headmistress was voiced by Andrea Romano, who was in charge of the series' voice casting.