This article lists the major and recurring fictional characters created by Joss Whedon for the television series, Buffy the Vampire Slayer. For detailed descriptions, see individual character pages.
The following characters were featured in the opening credits of the program.
The show's titular protagonist, Buffy is "The Slayer", one in a long line of young girls chosen by fate to battle evil forces in the form of vampires and demons. The Slayer has no jurisdiction over human crime. This calling mystically endows her with a limited degree of clairvoyance, usually in the form of prophetic dreams, as well as dramatically increased physical strength, endurance, agility, intuition, and speed and ease of healing. There traditionally has been only one Slayer alive at any given moment, with a new one called upon the event of her death.
Xander is a close friend of Buffy. Possessing no supernatural skills, Xander provides comic relief as well as a grounded, everyman perspective in the supernatural Buffyverse. In another departure from the usual conventions of television, Xander is notable for being an insecure and subordinate male in a world dominated by powerful females.
Willow was originally a nerdy girl who contrasted Buffy's cheerleader personality but also shared the social isolation Buffy suffered after becoming a Slayer. As the series progressed, Willow became a more assertive and even sensual character; in particular, she realized that she was a lesbian and became a powerful Wiccan. Willow is Buffy's best friend through everything that happens and maintains her humanity and kindness to others throughout.
Giles, rarely referred to by his first name, is a Watcher and a member of the Watchers' Council, whose job is to train Slayers. In the earlier seasons, Giles researched the supernatural creatures that Buffy must face, offered insights into their origins and advice on how to kill them. Throughout the series, he became a father-figure to Buffy, Willow, Xander, and the others, giving them advice not only on the supernatural world, but on life issues as well.
Cordelia is originally an archetypal popular, shallow, mean-spirited cheerleader. She is tactless, but direct and honest, and she becomes a reluctant ally of the Scooby Gang, even after her relationship with Xander disintegrates. After season 3, she joins Angel in L.A., where she abandons her attempts at acting to fight evil at his side.