RIPPER. Buffyverse.
Youthful nickname of Rupert Giles, whose checkered past, including a flirtation with the Dark Side, is first revealed in "The Dark Age." In "Band Candy," under the influence of Ethan Rayne magic that causes adults to again become teenagers, Giles again becomes Ripper.
The long-planned BBC spin-off series about Giles is to be called Ripper.