Foundation stars SAG Award-winner and Emmy-nominee Jared Harris as Hari Seldon; Lee Pace as Brother Day; Lou Llobell as Gaal; Leah Harvey as Salvor; Laura Birn as Demerzel; Terrence Mann as Brother Dusk; and Cassian Bilton as play Brother Dawn.

Jared Harris was in the Expanse and was Moriaty opposite the Robert Downey Jr's Sherlock Holmes.