Stephan JamesHalan Kai Nielsen / Executive Producer Lena HeadeyAster Calyx / Executive Producer Wade Bogert O'BrienBart (voice) Bo MartynowskaLilya Gashade Stephen RootSolomon Smythe Sydney Ozerov-MeyerGrisha Hannah Melissa ScottTeenage Aster Calyx David TompaDosto Bix Chennault Zarrin Darnell-MartinNybecca Carolina BartczakDr. Ree Avalon Ben CainKadir Soon Nielsen Paulino NunesTimur 'Battle' Ondi Marnie McPhailDr. Rojan Kaneddy Dani KlupschMadanchi 'Bigface' Tritujuma (uncredited) Christine AzizISA Secretary Daniel PercivalRegisseur / Executive Producer Lewin WebbRegisseur / Supervising Producer Angel Kristi WilliamsRegisseur Zak PennSchrijver / Executive Producer Ira Steven BehrSchrijver / Executive Producer Joy BlakeSchrijver / Executive Producer Glen MazzaraSchrijver / Executive Producer Christina MartinSchrijver Dagny Atencio LooperSchrijver Sarah NolenSchrijver / Supervising Producer David FortierExecutive Producer Ivan SchneebergExecutive Producer Tina ThorExecutive Producer James MiddletonExecutive Producer Stephan JamesHalan Kai Nielsen / Executive Producer Elisa EllisExecutive Producer Nick NantellExecutive Producer Liz VarnerExecutive Producer Katie O'Connell MarshExecutive Producer Lena HeadeyAster Calyx / Executive Producer Evan WebberProduction Design Todd FjelstedProduction Design Joyce SchureCostume Design Katy SiracusaCostume Design Ramin DjawadiMusic Producer William MarriottOriginal Music Composer Seth YanklewitzOriginal Casting Ben PollackOriginal Casting