Jared Harris Dr. Hari Seldon Actor Lee Pace Brother Day Actor Lou Llobell Gaal Actor Leah Harvey Salvor Actor Laura Birn Demerzel Actor Terrence Mann Brother Dusk Actor Cassian Bilton Brother Dawn Actor Alfred Enoch Raych Seldon Actor David S. Goyer Executive Producer, Writer Josh Friedman Executive Producer Cameron Welsh Executive Producer David Ellison Executive Producer Dana Goldberg Executive Producer Robyn Asimov Executive Producer Victoria Morrow Executive Producer Leigh Dana Jackson Executive Producer Russell Rothberg Executive Producer