Landgraf said that Executive Producer and Showrunner Noah Hawley (Fargo) had planned for the series to run for three seasons from the start, and that the decision to end the series now allowed Hawley to conclude the story as intended with Legion Season 3.
Hawley also announced two guest castings for the final season of Legion. Stephanie Corneliussen will play David Haller’s mother, Gabrielle, and Harry Lloyd will play his father, Professor X.
Based on the Marvel Comics by Chris Claremont and Bill Sienkiewicz, Legion follows the story of David Haller (Dan Stevens), a man who believed he was schizophrenic but discovered he might be the most powerful mutant in the world. With help from a team of specialists, David harnessed his unique abilities and learned he’d been haunted by a malicious parasite. Now, David is all that stands in the way of Amahl Farouk (Navid Negahban) from attaining infinite and world-ending power.
The series also stars Rachel Keller, Aubrey Plaza, Bill Irwin, Jeremie Harris, Amber Midthunder, Katie Aselton, Jean Smart, Jemaine Clement, and Hamish Linklater.
Noah Hawley serves as Executive Producer on Legion, along with John Cameron, Lauren Shuler Donner, Simon Kinberg, Jeph Loeb and Jim Chory. Legion is the latest project from Hawley and Cameron, two of the executive producers of the Emmy and Golden Globe-winning FX anthology series Fargo. Legion is produced by FX Productions and Marvel Television, with FXP handling the physical production.