
The Buffybot appears in Seasons 5 and 6 of the television series Buffy the Vampire Slayer. It is an identical robot replica of the real Buffy Summers and is also played by Sarah Michelle Gellar.
Though it is a perfect physical likeness of Buffy and has complete knowledge of Buffy's friends and family, the Buffybot's mannerisms and speech patterns are stilted and imperfect by human standards. It also lacks understanding of nuance and tact, and can be disconcertingly blunt in conversation.
The Buffybot first appears in the episode "Intervention", having been created by Warren Mears as a sex toy for the vampire Spike, who is obsessed with Buffy. Therefore, the Buffybot is initially programmed to be in love with Spike and will do anything to please him. Buffy's friends mistake the robot for her, assuming that Buffy's grief over her mother's death has driven her insane, and Buffy later poses as the Buffybot to find out whether Spike betrayed her and Dawn Summers to the hellgod Glory, rewarding him with a kiss when she learns that he endured torture to protect them. In the Season Five finale, "The Gift", Xander Harris and Anya Jenkins find the deactivated Buffybot in the basement of The Magic Box; Willow Rosenberg repairs it and it makes the first strike against Glory, distracting her from the real Buffy. After a few minutes of battle, the Bot is decapitated by Glory and the real Buffy then reveals herself.
After Buffy's death in "The Gift", Willow repairs and reprograms the Buffybot to impersonate her, to keep the demon world unaware – for as long as possible – that the Slayer no longer defends Sunnydale. The Buffybot's original programming occasionally resurfaces, which both pains and irritates Spike. The impersonation also ensures that Dawn, lacking a legal guardian in Sunnydale with both Buffy and their mother dead, can stay in town with the Scooby Gang, and the group can continue to use the Summers home as their base. In "Bargaining", one vampire discovers the secret when fighting with it; when he reveals this to a demon biker gang, they invade and sack Sunnydale. The demons destroy the Buffybot by tearing it limb from limb with motorcycles. Before "dying", the Buffybot reveals to Dawn that the real Buffy has returned from the dead.