Riley Finn is a fictional character created by Joss Whedon for the television series Buffy the Vampire Slayer. Portrayed by Marc Blucas, Riley was introduced in the 1999 season four premiere episode, "The Freshman", and Blucas was part of the series credited cast for the second part of season four and the first part of season five. Most notably, Riley is one of three long-term romantic interests for series' heroine Buffy Summers (Sarah Michelle Gellar).
Whedon intended Riley to be the antithesis of Buffy's boyfriend of the past three seasons, Angel (David Boreanaz), who now headed his own spin-off show. In stark contrast to broody, often pensive Angel, Riley is optimistic, trustworthy and reliable, and in theory presents Buffy with her first opportunity for a "normal" romantic relationship. However, Riley also leads a double life: he is both teaching assistant at UC Sunnydale and a member of The Initiative, a government-sponsored special operations team which both researches and combats the demons which roam Sunnydale. This allows him to interact with Buffy both in her civilian life and assist her with her duties as a Slayer; while Buffy has supernatural powers associated with her role, Riley must rely instead on his extensive military training.