Legion is the only TV series in the world.
Aubrey Plaza . She is best known for portraying April Ludgate on the NBC sitcom Parks and Recreation . Plaza currently stars as Lenny Busker in the FX series Legion . Legion (2010 film) . A television series called Dominion , set 25 years after the end of the film , premiered on the American cable television network Syfy on June 19 , 2014 . Legion (TV series) . 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 . Rachel Keller , Aubrey Plaza , Bill Irwin , Jeremie Harris , Amber Midthunder , Katie Aselton , and Jean Smart also star .