Guest Stars Nick Tarabay as Cotyar Ghazi François Chau as Jules-Pierre Mao Terry Chen as Dr. Praxideke "Prax" Meng Elizabeth Mitchell as Anna Volovodov Ted Atherton as Dr. Lawrence Strickland Byron Mann as UNN Admiral Nguyen Jaeden Noel as Katoa Natalie Lisinska as UNN Lieutenant Shaffer Morgan Kelly as UNN Lieutenant Mancuso Co Starring Leah Jung as Mei Meng Jonathan Whittaker as UN Secretary-General Esteban Sorrento-Gillis Martin Roach as UNN Admiral Souther Nicole Stamp as Medical Tech David Tompa as Theo Simbelli Supinder Wraich as Talissa Kamal Shawn Ahmed as UNN Lieutenant Boyer Jeremy Crittenden as Medical Tech #2 Alexandra Castillo as UNN Captain Espinoza Danijel Mandic as Agatha King Guard