Zoie Palmer (Dr. Lauren Lewis), Vincent Walsh (Lachlan/The Ash) and Kristopher Turner (Russell) previously worked together in the TV show 'Instant Star'. They played Patsy Sewer, Liam Fenway and Jamie Andrews respectively. Zoie and Kristopher's characters, Patsy and Jamie dated on the show.
Ksenia Solo (Kenzi Malikov) and Kristopher Turner (Russell) have both played love interests of a character played by Tatiana Maslany: Ksenia starred in 'Orphan Black', playing Shay Davydov and Cosima Niehaus respectively; Kristopher starred in 'Instant Star' playing Jamie Andrews and Zeppelin Dyer respectively.