Legion: Season Finale Promo March 25, 2017 TaylorNetwork no comment on Legion: Season Finale Promo Airing Wednesdays at 10 p.m. ET/PT on FX, Legion stars Dan Stevens, Rachel Keller, Aubrey Plaza, Bill Irwin, Jeremie Harris, Amber Midthunder, Katie Aselton and Jean Smart. Share this:TwitterFacebookLinkedInPinterestRedditTumblrLike this:Like Loading...