Rose Killdragonosa is a character from animated series, American Dragon: Jake Long. She is the titular character's girlfriend with a dark secret: she is the Huntsgirl, whose purpose is to slay the American Dragon.
After she found out Jake Long is the American Dragon in the season 1 finale, she becomes his ally during season 2.
She is voiced by Mae Whitman, who voices Little Suzy from Johnny Bravo and Katara from Avatar: The Last Airbender. Ironic for the latter's case since that two of her characters are involved with Dante Basco's characters.
Future
In the future episode, she and Jake get married and live in a nice home and they have a son named Jake Long Junior.