Guest Stars Aleks Paunovic as Julius Romanski Rowland Pidlubny as Scab Hilary Jardine as Susan Jackson Macie Juiles as Callie Duncan Ollerenshaw as Dr. Sholomenko Naika Toussaint as Sheema John DeSantis as Gustov Christina Jastrzembska as Mama Terry Chen as Brendan Alison Wandzura as Nicole Sarah Desjardins as Catherine Gia Crovatin as Antanasia Keith Arbuthnot as Nikolai Jason William Day as Refugee 1 Matt Phillips as Julius' Feral Dog Tommy Europe as Refugee 2