Legion airs on FX.
Legion is an American cable television series created for FX by Noah Hawley , based on the Marvel Comics character David Haller / Legion . It is connected to the X-Men film series , the first television series to be so , and is produced by FX Productions in association with Marvel Television . The eight-episode first season of Legion premiered at the Pacific Design Center on January 26 , 2017 , ahead of its FX debut on February 8 .