Series Phase 3B — Civil War & Fallout (2016–2018)

Legion (Season 1)

Name: Legion (Season 1)
Released: 2017-02-08
Duration: 360 min
Rating: 7.5
Cast: Dan Stevens, Rachel Keller, Aubrey Plaza, Jeremie Harris, Amber Midthunder

"Open your third eye."

Released February 8, 2017 6h ★ 7.5TMDB ○ Optional

David Haller, AKA Legion, is a troubled young man who may be more than human. 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.

Watch note

David Haller — a powerful mutant and, in the comics, Charles Xavier's son — battles his own mind and a parasitic entity. A surreal, standalone Fox X-Men show.

Outside the MCU A 20th Century Fox production, made outside Marvel Studios, so it belongs to a separate continuity. It's listed here because it shares characters with the MCU — whether you watch it is up to you.

Where It Fits in the MCU

Legion (Season 1) sits at position 85 of 165 in the MCU's story-chronological order, placing it within the Phase 3B — Civil War & Fallout (2016–2018) era. It is rated Optional — can be skipped without losing the main thread. Watching in story-chronological order provides the most coherent character development experience — individual arcs build naturally toward the franchise's major crossover events, with each film's post-credits scenes carrying forward into what follows.