Aidan (Sam Witwer) – must come to grips with the death of Bishop and Rebecca and this season we are introduced to another member of the vampire hierarchy called Mother who is like the Queen Elizabeth of the vampires. She offers Aidan freedom if he agrees to train her disgraced daughter Suren, played by season two regular Dichen Lachman (Dollhouse). Mother and Suren are biological vampires in the sense that it was Mother who turned her own daughter. Aidan has known Suren for about 100 years. We are also introduced to Aidan’s vampire protégé, the last vampire he turned who is played by Kyle Schmid (History of Violence). “And both of these people will greatly, greatly complicate Aidan’s life,” Carver said. “And will play a major part in sort of leading him down this dark hole that he may end up going down this season.”
Josh (Sammy Huntington) – is completely unaware that he scratched Nora and they both away the first full moon not knowing what to expect. Last season Josh came into contact with just two others like him. We are going to see an expansion of the types of werewolves, to show that there is more than one species. Josh’s past also comes back in unexpected ways.
Sally (Meaghan Rath) – deals with choosing to help her friend in need over her door and she is introduced to lots of different types of ghosts that show her a variety of spectral temptations. Also her passing up her door unwittingly brings specific ghosts looking for her. Like Josh, her past will come back to greet her in ways she was not expecting.
Nora (Kristen Hager) – Not to be forgotten is Josh’s girlfriend who is the unofficial #4 of the show, who Carver said is a “fantastically integral part of the show” who deserves more mentions. She will become more self-sufficient as a result of Josh scratching her and that will have “massive implications” on their relationship.