Serleena

Serleena was the main antagonist of Men In Black II, although taking the form of an attractive human model once arriving on Earth she was in reality a shape-shifting alien resembling in manys a monstrous plant-like monster of considerable size and power: she is arguably more powerful than Edgar, the antagonist of the first film and sought a mysterious power-source known as "The Light".

Serleena was aided by a duo known as Scrad & Charlie - who acted as her henchmen and the secondary antagonists of the movie.