Ian Weir Creator, Executive Producer Rossif Sutherland Karl Alberg Actor Kristin Kreuk Cassandra Lee Actor Marcia Gay Harden Mayor Christie Holman Actor Bethany Brown Corporal Laila Jackson Guest Star Aaron Douglas Sergeant Sid Sokolowski Guest Star Jed Rees Harry Garvey Guest Star Marci T. House Dr. Angela Clyborn Guest Star Joshua Close Todd Loomis Guest Star Savonna Spracklin Isabella Harbud Guest Star Fiona Vroom Phyllis Diaz Guest Star Jacob Shoemay Brett Holman Guest Star Alex Duncan Natalie Holman Guest Star Jodelle Ferland Vanessa Guest Star Max Lloyd-Jones Robert Scott Guest Star Dakota Guppy Holly Alberg Guest Star Greg Kean Sean Van Der Meer Guest Star Paloma Kwiatkowski Bree Guest Star Birkett Turton Warren Guest Star Ted Cole Dr. Lance Greenwood Guest Star Mary-Beth Manning Claire Guest Star Ryan Mah Principal Napier Guest Star Milan Cheylov Executive Producer Nick Orchard Executive Producer Morris Ruskin Executive Producer Sharon Wisnia Executive Producer Jon Cotton Executive Producer