Special Guest Stars Matt Ryan as John Constantine Ramona Young as Mona Wu Guest Stars Adam Tsekhman as Agent Gary Green Shayan Sobhian as Behrad Tarazi Sisa Grey as Mona Wu Michael Eklund as Grigori Rasputin Adam Beauchesne as Kevin Harris Callum Seagram Airlie as Edgar Co Starring Harrison MacDonald voices Masher Paul Batten as Senator Wellington Clare Filipow as Nurse Luisa Jojic as Tsarina Alexandra Ryan Elm as Tsar Nicholas II Gregory Tunner as Giant Bouncer Kougar Vakarian as Monk Uncredited Tala Ashe as Zari Adrianna Tomaz