Guest Stars Aaron Douglas as Gordon Rimmer Neil Brown Jr. as Joel Estevez Miguel Sandoval as Colonel Scott Riggins Julian McMahon as Zackariah Webb Co Starring Osric Chau as Jacob Vogel Viv Leacock as Gripps Zak Santiago as Cross Michael Adamthwaite as Zed Alison Thornton as Lydia Spring Christian Bako as Ed Eric Keenleyside as Edmund Doyle Jarelle Hepburn as Orderly Ashley O'Connell as Desk Sergeant