In between directing his feature film debut Lucy in the Sky and ramping up the fourth season of Fargo with Chris Rock along for the ride , Noah Hawley somehow found time for yet another journey: one last trip through the mind of David Haller, the overpowered telepath at the heart of FX's Legion , based on Marvel's relatively obscure X-Men comic book of the same name.

It feels like a really strong proof of concept, taking something that can be whimsical, dramatic, slightly horrifying character-driven genre piece and using it as a meditation on Mental Illness and the abuse of power, and all of the other things it's probably about."

After a lifetime weaving in and out of treatment for mental illness, David becomes empowered on learning about his super-powerful roots as the son of Charles Xavier, played alternately by Patrick Stewart and James McAvoy in the X-Men films.

The happy ending is very much in doubt after the season three premiere, "Chapter 20," in which David seeks out a time-traveling mutant named Switch (Lauren Tsai) in order to help him go back into the past and make some critical adjustments.

It's also reflected in another character's point of view: Syd, as important as ever as Legion enters the endgame, and as she reconciles the reality of her former relationship with David.

Who knows what lies ahead in the final season of Legion , but Hawley casually referencing a recent meeting with Marvel mastermind Kevin Feige should make at least one thing clear: even as he's putting this particular story to rest, and even as he's in varying stages of development on Lucy in the Sky and Fargo season four, Hawley is still thinking about projects set in the superhero space.