Zak Penn Creator, Executive Producer, Writer Lena Headey Aster Actor, Executive Producer Stephan James Halan Actor, Executive Producer Natasha Mumba Harmony Actor Carolina Bartczak Dr. Ree Avalon Guest Star Marc Menchaca Keir Guest Star Bo Martynowska Lilya Gashade Actor Barbara Hershey Sophie Guest Star Sandrine Holt Coley Actor Paulino Nunes Battle Actor Eric Lange Milan Aleph Guest Star Stephen Root Solomon Actor Jess Salgueiro Saldana Guest Star Marnie McPhail Kaneddy Actor Wade Bogert-O'Brien Bartholomew Voice Jaeden Noel Chick Actor A.J. Simmons Farut Guest Star Sydney Ozerov-Meyer Grisha Guest Star Glen Mazzara Executive Producer David Fortier Executive Producer Ivan Schneeberg Executive Producer James Middleton Executive Producer Nick Nantell Executive Producer Tina Thor Executive Producer Katie O'Connell Marsh Executive Producer Elisa Ellis Executive Producer Liz Varner Executive Producer Ira Steven Behr Executive Producer, Writer Daniel Percival Executive Producer, Director Joy Blake Executive Producer Allison Moore Writer