Dawn Summers is a fictional character created by Joss Whedon for the television series Buffy the Vampire Slayer, portrayed by Michelle Trachtenberg. She has the distinction of being the only character, barring Buffy, Willow and characters who only appeared in the last season, to appear in every episode after her debut.
Season Six (2001-2002) sees Dawn struggle with abandonment issues, as well as her escalating kleptomania. Having been devastated by her sister's death, Dawn is overjoyed when Willow (Alyson Hannigan) casts a spell to bring her back to life. She later experiences her first kiss with a vampire named Justin, whom she is reluctantly forced to stake when he tries to kill her. Dawn's isolation from the other characters reaches its apex when she inadvertently makes a wish to the vengeance demon Halfrek (Kali Rocha) which results in them becoming temporarily trapped inside the Summers house. While helping Buffy battle demons in the season finale, Dawn proves herself to be capable in a fight, finally earning her sister's respect. In Season Seven (2002-2003), Dawn becomes more grown-up and a fully-fledged member of the "Scooby Gang". Falling victim to a love spell in the episode "Him", she displays dangerous behavior such as attacking people and trying to commit suicide to prove her "love" for classmate RJ Brooks. While home alone one night, Dawn is forced to perform a solo exorcism to protect what she believes to be her mother from a demon. After wrongly believing herself to be a Potential Slayer, Xander (Nicholas Brendon) explains to Dawn that being normal is perhaps the hardest burden of all, as nobody understands the pain of being overlooked. When Buffy tricks her into leaving town before the impending apocalypse, Dawn adamantly returns to fight against The First, during which she battles alongside Xander and survives. Dawn was originally intended to appear in the Angel episode "The Girl in Question". However, Michelle Trachtenberg was unavailable for filming, so the character of Andrew Wells, played by Tom Lenk, replaced her.
In the canonical comic book continuation to the television series Buffy the Vampire Slayer Season Eight (2007-present), Dawn has become a giant, which Buffy believes is the result of losing her virginity to a "thricewise" named Kenny. Later in the series however, Dawn confides in Xander that she in fact slept with Kenny's roommate and that her becoming a giant was due to a spell cast by Kenny. As a giant, Dawn's personal issues are forced to take a backburner while she finds interaction between friends and family more strained. In battles however, her gigantism has shown some utility; she is able to assist fighting Amy in "The Long Way Home", and rampages through Tokyo to cause a distraction in "Wolves at the Gate".
In "Time of Your Life, Part One" she shrinks to normal size again, but then turns into a centaur. Xander surmises that she will likely experience a third such transformation before she can return to normal.
Dawn will appear in the upcoming "After These Messages... We'll Be Right Back!", which centers on the plot of the unproduced animated series. A variant cover shown by Georges Jeanty features the original Season One cast (including Cordelia and Angel), along with a pre-teen version of Dawn.
According to Buffy creator Joss Whedon, the introduction of Dawn in Season Five was partly so that protagonist Buffy Summers could experience a "really important, intense emotional relationship" with someone other than a boyfriend. "She's as intense as she was in Season Two with Angelus, but it's about her sister," Whedon says. "To me that was really beautiful. Trachtenberg says she was thrust into the role without knowing much about Dawn's personality; she describes her initial meeting with Joss Whedon as "Alright, welcome to the cast, you're a teenager, you're a Key, have fun.
Author Nikki Stafford saw the season seven episode "Potential" as an example of Dawn's growing maturity. She praises the character for taking charge and accepting the possibility that she might be a Potential Slayer, and for quietly stepping back when she turns out to be wrong, without revealing how disappointed she really is. Stafford states, "Dawn has come a long way from the annoying adolescent she was in Season Five, and the screechy, difficult teen she was in Season Six ("get out, Get Out, GET OUT!"). She is a mature young woman, the same age as Buffy was in Season One, but she is handling her problems with even more grace and acceptance than her older sister did."