where did buffy's sister dawn come from
Dawn Summers After years of foreshadowing, Dawn was introduced at the start of the fifth season as part of a large in-story retcon: Characters accepted Dawn's presence as if she had always been there, and as if Buffy always had a sister, with only the audience aware that this was not the case. As the series went on, the significance of Dawn's arrival is revealed to the series's other characters, and they come to understand that she has not always been Buffy's sister, or indeed a sentient being; Dawn had originally been the mystical "key" to unlocking dimensions and was made into Buffy's sister so the Slayer would protect her. Dawn is, however, a real girl, Buffy's biological sister, and has real memories of her fictional childhood. She struggles in a very human way when she discovers the truth about her origins and later endures problems with self-harm and kleptomania. The show's sixth and seventh seasons, as well as its canonical comic book continuation, follow Dawn's journey toward adulthood.
Willow Rosenberg At the end of the second season, Willow begins to study magic following the murder of the computer teacher and spell caster Jenny Calendar (Robia LaMorte). Willow is able to perform a complicated spell to restore the soul of Angel, a vampire who is also Calendar's murderer and Buffy's boyfriend. During the third season three episodes explore Willow's backstory and foreshadow her development. In "Gingerbread", her home life is made clearer: Sunnydale falls under the spell of a demon who throws the town's adults into a moral panic, and Willow's mother is portrayed as a career-obsessed academic who is unable to communicate with her daughter, eventually trying to burn Willow at the stake for being involved in witchcraft;[14] her father is never featured. In "The Wish" a vengeance demon named Anya (Emma Caulfield) grants Cordelia's wish that Buffy never came to Sunnydale, showing what would happen if it were overrun with vampires. In this alternate reality, Willow is an aggressively bisexual vampire. In a related episode, "Doppelgangland", Willow meets "Vamp Willow", who dresses provocatively and flirts with her.[15]