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
Buffy the Vampire Slayer was going to play the rest of the scene, and the role, for that matter, and defined the character. Her approach subsequently got her the role. The "Buffy" opening sequence provides credits at the beginning of each episode, with the accompanying music performed by Californian rock band Nerf Herder. In the DVD commentary for the first "Buffy" episode, Whedon said his decision to go with Nerf Herder's theme was influenced by Hannigan, who had urged him to listen to the band's music. Janet Halfyard, in her essay "Music, Gender, and Identity in "Buffy the Vampire Slayer" and "Angel"," describes the