Fox channels outside the U.S. have picked up worldwide rights to the FX Productions and Marvel Television series “Legion,” created by “Fargo’s” Noah Hawley and set in the universe of Marvel’s X-Men franchise.

The series is slated for an early 2017 day-and-date premiere in more than 125 countries and in the U.S., where it will premiere on FX Networks. The FX Networks first season order was announced last week.

“Legion” joins Fox’s growing roster of global, simultaneous launches, including “The Walking Dead,” “Outcast” and “Wayward Pines.” Fox networks are available in more than 125 countries and to over 250 million homes outside the U.S.

“Legion” is the story of a troubled young man who may be more than human. It introduces the story of David Haller, who since he was a teenager, has struggled with mental illness. Diagnosed as schizophrenic, David has been in and out of psychiatric hospitals for years. But after a strange encounter with a fellow patient, he’s confronted with the possibility that the voices he hears and the visions he sees might be real.

Dan Stevens (“Downton Abbey”), Rachel Keller (“Fargo”), Jean Smart (“Fargo”), Aubrey Plaza (“Parks and Recreation”), Jeremie Harris (“A Walk Among the Tombstones”), Amber Midthunder (“Hell or High Water”), Katie Aselton (“The League”) and Bill Irwin (“Interstellar”) star in “Legion.”

Hawley will serve as an executive producer along with Lauren Shuler Donner, Bryan Singer, Simon Kinberg, Jeph Loeb, Jim Chory and John Cameron.

Production on the eight-episode first season will begin this summer in Vancouver. FXP will be handling the physical production. Fox Networks Group’s sales arm will be handling distribution to third parties.