Drusilla (Buffy-verse)

Drusilla first appeared in Traitor Game XI, when she was summoned by Charon to keep the "Classic TV" Wonder Girl (also named Drusilla) busy in an arena fight. The infamous vampire nearly dispatched Wonder Girl the same way she killed Kendra The Vampire Slayer, except for the timely intervention of Wonder Woman's ghost & Rogue. Wonder Girl defeated Drusilla by lopping off her head with the magic tiara. However, Drusilla was restored to "unlife" after the game's end. 
Subsequently, Drusilla appeared in Traitor Game XIII when summoned forth by the Dark Dwarf to do battle with her ex-lover Spike at the climax of the game. She was defeated by Spike, who then went on to make a dramatic ride alongside the Ghost Rider to the final confrontation.
She has not as yet made another appearance in the Traitor Games.