Buffy the Vampire Slayer Denisof were followed later by Mercedes McNab (Harmony Kendall) and James Marsters (Spike). Several actors and actresses who played "Buffy" characters made guest appearances on "Angel", including Seth Green (Daniel "Oz" Osbourne), Sarah Michelle Gellar (Buffy Summers), Eliza Dushku (Faith), Tom Lenk (Andrew Wells), Alyson Hannigan (Willow Rosenberg), Julie Benz (Darla), Mark Metcalf (The Master), Julia Lee (Anne Steele) and Juliet Landau (Drusilla). Angel also continued to appear occasionally on "Buffy". The storyline has been continued in the comic book series "" published by IDW Publishing and later "Angel and Faith" published by Dark Horse Comics. Outside of the TV
Unofficial Buffy the Vampire Slayer productions Unofficial Buffy the Vampire Slayer productions The fictional universe established by television series "Buffy the Vampire Slayer" and "Angel" and the film "Buffy the Vampire Slayer" has been parodied or paid tribute to by a number of unofficial productions, most notably fan films and adult films. Several notable fan films have been inspired by the Buffyverse. Although 20th Century Fox and its licensees are the only organizations legally allowed to create any commercial products with the name and trademark "Buffy" and "Angel", related fan films have become more common, as computer and digital technology has advanced, to allow films to