Stina and Biana

Stiana or Hacker is the romantic/friendship pairing between Stina Heks and Biana Vacker. Stina and Biana first meet before Book 1: Keeper of the Lost Cities. In the first series, they are shown to be rivals, as Biana is the queen bee of the school and Stina is the bully. They don't have much to do with each other until Book 8: Legacy in which they are both members of Team Valiant. At first Biana is shown to have a strong disliking of Stina, but later in the book they become closer.