(Amber Benson) is a fellow member of Willow's Wicca group during season four, and their friendship eventually turns into a romantic relationship. Buffy becomes involved personally and professionally with Riley Finn (Marc Blucas), a military operative in "the Initiative", which hunts demons using science and technology. The final season sees geeky wannabe-villain Andrew Wells (Tom Lenk) come to side with the Scoobies after initially being their captive/hostage; they regard him more as a nuisance than an ally. Buffy featured dozens of recurring characters, both major and minor. For example, the "Big Bad" (villain) characters were featured for at least one season (for example, Glory is a character who appeared in 12 episodes, spanning much of season five). Similarly, characters who allied themselves to the group and characters who attended the same institutions were sometimes featured in multiple episodes. Setting and filming locations The show is set in the fictional California town of Sunnydale, whose suburban Sunnydale High School sits on top of a "Hellmouth", a gateway to demon realms. The Hellmouth, located beneath the school library, is a source of mystical energies as well as a nexus for a wide variety of evil creatures and supernatural phenomena. In addition to being an open-ended plot device, Joss Whedon has cited the Hellmouth and "high school as hell" as one of the primary metaphors in creating the series. Most of Buffy was shot on location in Los Angeles, California. The high school used in the first three seasons is actually Torrance High School, in Torrance, California, the same high school used for Beverly Hills, 90210. The show was initially very dependent on location shooting, because the production budget allowed for few permanent sets to be built. In Season One this was limited to the interior of Sunnydale High (the library, hallways, and classrooms), Buffy's bedroom, and the Master's underground lair. Starting in Season Two, more permanent sets were built, including the full interior of Buffy's house, Angel's mansion, and Giles's apartment, as well as extensions to the high school set (the addition of a dining hall and commons area). A driveway area near the gated entrance to Fox Studios was transformed into a graveyard. In Season Three the Sunnydale "Main Street" was constructed on the backlot, which would be a staple location for the rest of the series. When the show transitioned to college in the fourth season, the hallway sets from