Batgirl

Batgirl was introduced as a human, costumed vigilante identity within DC Comics. The most widely cited first appearance of the Batgirl mantle (as Barbara Gordon) is Detective Comics #359, cover-dated January 1967, in the story 'The Million Dollar Debut of Batgirl.' The name is an English compound (bat + girl) and originally appeared hyphenated in earlier usages (Bat-Girl). The identity functions as a mantle that multiple characters have taken on over time; editorial and continuity decisions (including retcons following Crisis on Infinite Earths and later relaunches such as New 52 and Infinite Frontier) have retired, restored, and reassigned the role across different publication eras.

Descriptions in the sources emphasize a bat-themed, masked vigilante costume adapted for a female wearer; Barbara Gordon's debut presents her as attending a costume ball 'dressed as a female version of Batman.' Specific costume details vary across eras and among different women who have worn the Batgirl cowl (notably Betty/Bette Kane, Barbara Gordon, Cassandra Cain, Stephanie Brown, and in one storyline Helena Bertinelli briefly). There is no single canonical physical description in the supplied materials beyond the masked, bat-themed vigilante presentation.

As a non-supernatural, street-level vigilante identity, Batgirl's abilities and behaviors depend on the person occupying the mantle. Barbara Gordon acted as a crimefighter allied with Batman and Robin, and after being shot in The Killing Joke she was reimagined as Oracle, a paraplegic computer expert and information broker supplying intelligence and coordination to other vigilantes. Cassandra Cain, raised by assassins and trained from childhood, is described as an exceptional martial artist whose primary language was body language, making her a highly skilled hand-to-hand combatant and stealth operative; she notably headlined her own monthly Batgirl series. Other bearers (e.g., Stephanie Brown, Betty/Bette Kane) have performed as masked vigilantes in support of the Batman family. The mantle is used for both collaborative operations with Batman and for independent story arcs.