Antigone Smith is the sister of Cyrus Smith and Daniel Smith, and is one of the main protagonists of the Ashtown Burials series. She gets sworn into The Order of Brendan with her brother after receiving the Dragon's Tooth and a magical set of keys. Cyrus calls her "Tigs" as a nickname, and sometimes teasingly calls her "Tigger."
Antigone looks very much like her mother, with high cheekbones and a wide smile. She has short black hair, which she likes to wear in a bandanna. She's not particularly short, but not as tall as Cyrus either.