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 Marci T. House Dr. Angela Clyborn Guest Star Savonna Spracklin Isabella Harbud Guest Star Fiona Vroom Phyllis Diaz Guest Star Dakota Guppy Holly Alberg Guest Star Jodelle Ferland Vanessa Guest Star Alisha Newton Devon Travis Guest Star Cassandra Sawtell Steph Alberg Guest Star Paloma Kwiatkowski Bree Guest Star Jason Tremblay Doug Bodanski Guest Star Janet Kidder Maeve O'Hara Guest Star Petey Gibson Will Raker Guest Star Melanie Papalia Ella Perini Guest Star Glynis Davies Karen Park Guest Star Kelly Metzger Yvette Fraser Guest Star Emily Madison Nena Guest Star Masini McDermott Jolie Zorn Guest Star Milan Cheylov Executive Producer Nick Orchard Executive Producer Morris Ruskin Executive Producer Sharon Wisnia Executive Producer Jon Cotton Executive Producer