According to The Hollywood Reporter, the debut season will run eight episodes and focus Dan Stevens’ David Haller, a trouble young man who learns his visions may not be a symptom of schizophrenia, but part of a real conflict brewing in the world.
The series will also feature Aubrey Plaza as Lenny, a friend of David’s, and Jean Smart as a psychiatrist trying to help David with his problems. Rachel Keller will also appear as an unnamed character said to be “a mix of Rogue and Spyke.”
Legion was developed by Fargo mastermind Noah Hawley, who will serve as showrunner on the series. It will debut in early 2017.