Question: What is Noah Hawley's Legion cable series based on?
Context: Noah Hawley (born  1967 ) is an American television writer and producer, screenwriter, and bestselling author, best known for creating and writing the FX television series "Fargo" (2014–present) and "Legion" (2017–present).  Hawley earlier worked on the television series "Bones" (2005–2008), "The Unusuals" (2009) and "My Generation" (2010). The first season of the American cable television series "Legion" is based on the Marvel Comics character David Haller / Legion, a mutant diagnosed with schizophrenia at a young age, who learns that his illness may actually be abilities.  The season is connected to the "X-Men" film series, and was produced by FX Productions in association with Marvel Television.  Noah Hawley served as showrunner. "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 do so.  The first season, consisting of eight episodes, began airing on February 8, 2017.  A second season was ordered in March 2017. The third season of "Fargo", an American anthology black comedy–crime drama television series created by Noah Hawley, premiered on April 19, 2017, on the basic cable network FX.  The season had ten episodes, and its initial airing concluded on June 21, 2017.  As an anthology, each "Fargo" season possesses its own self-contained narrative, following a disparate set of characters in various settings, albeit in a connected shared universe. "Chapter 1" is the pilot episode of the American cable television series "Legion", based on the Marvel Comics character David Haller.  The episode is connected to the "X-Men" film series, the first television episode to do so, and follows Haller, who believes himself to be schizophrenic until he is interrogated by government agents who think he may be the most powerful mutant discovered.  The episode was written and directed by Noah Hawley. The second season of "Fargo", an American anthology black comedy–crime drama television series created by Noah Hawley, premiered on October 12, 2015, on the basic cable network FX.  Its principal cast consists of Kirsten Dunst, Patrick Wilson, Jesse Plemons, Jean Smart, and Ted Danson.  The season had ten episodes, and its initial airing concluded on December 14, 2015.  As an anthology, each "Fargo" season possesses its own self-contained narrative, following a disparate set of characters in various settings. "Rizzoli & Isles" is an American crime drama series based on the novels by Tess Gerritsen, starring Angie Harmon and Sasha Alexander as the respective title characters.  It premiered on TNT on July 12, 2010, and set a record as cable TV's most watched commercial-supported series launch.  The premiere was later recognized as the all-time most successful cable series launch, with DVR viewers the week of the premiere increasing viewership to just over 9 million. Fargo is an American black comedy–crime drama anthology television series created and primarily written by Noah Hawley.  The show is inspired by the eponymous 1996 film written and directed by the Coen brothers, who serve as executive producers on the series alongside Hawley.  The series premiered on April 15, 2014, on FX, and follows an anthology format, with each season set in a different era, and with a different story and mostly new characters and cast, although there is minor overlap.  Each season shares a common chronology with the original film. 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.  Hawley serves as showrunner on the series. "Waiting for Dutch" is the first episode of the second season of the FX anthology series "Fargo", and the eleventh episode of the series overall.  It was written by series creator and showrunner Noah Hawley and directed by Michael Uppendahl and Randall Einhorn, making it the only episode in the series with two directors.  The title refers to the Samuel Beckett play "Waiting for Godot", and to Ronald Reagan, occasionally nicknamed "Dutch", who appears via archival footage.
Answer: Marvel Comics character David Haller