- Chapter 9
- Chapter 10
- Chapter 11
- Chapter 12
- Chapter 13
- Chapter 14
- Chapter 15
- Chapter 16
- Chapter 17
- Chapter 18
- Chapter 19
On March 15, 2017, it was announced that FX had ordered this series to be renewed for a second season.
Filming for the second season began on September 28, 2017.
On February 6, 2018, it was announced that season 2 would premiere on April 3, 2018.
For the second season, Jermaine Clement and Hamish Linklater, who recurred on the first season as Oliver Bird and Clark DeBussy, respectively, were promoted to series regulars. Navid Negahban also joined the cast as Amahl Farouk in Season 2 as well.
While Katie Aselton was credited as a series regular in the first season, she was credited as a recurring member in Season 2.
Bryan Singer, who was an executive producer on the first season, was not credited in Season 2.
On June 1, 2018, it was announced that FX had renewed this series for a third season. On February 4, 2019, it was announced at the Television Critics Association press tour, that this series would end with its third season. Joining the cast are Lauren Tsai as Switch, and Harry Lloyd and Stephanie Corneliussen as David's parents Professor X and Gabrielle.
- Dan Stevens, Aubrey Plaza & Jean Smart Cast in FX Networks' Pilot for 'Legion'. Marvel.com (4 February 2016). Retrieved on 26 July 2016.
- Goldberg, Lesley (18 February 2016). FX's 'X-Men' Drama 'Legion' Adds to Cast (Exclusive). The Hollywood Reporter. Retrieved on 26 July 2016.
- Andreeva, Nellie (22 February 2016). ‘Legion’ FX Pilot Casts Amber Midthunder. Deadline. Retrieved on 26 July 2016.
- Dornbush, Jonathan (1 March 2016). The League star Katie Aselton cast in FX's Legion. Entertainment Weekly. Retrieved on 26 July 2016.
- FX Networks Picks Up 'Legion' to Series. Marvel.com (31 May 2016). Retrieved on 26 July 2016.
- Dinh, Christine, "FX Orders Season Two of 'Legion'", Marvel.com, 2017-03-15. Retrieved on 2017-03-15.
- Hawley, Noah (September 28, 2017). It has begun. #Legion2. Twitter. Retrieved on March 10, 2018.
- Legion (2018-02-06). Where are you, David? #LegionFX returns April 3.. Twitter. Retrieved on 2018-02-06.
- O'Connell, Michael (June 1, 2018). 'Legion' Renewed for Season 3 at FX. THR. Retrieved on June 1, 2018.
- Porter, Rick (February 4, 2019). 'Legion' Will End with Season 3 on FX. THR. Retrieved on February 4, 2019.
- Otterson, Joe (January 9, 2019). 'Legion' Season 3 Casts Lauren Tsai (EXCLUSIVE). Variety. Retrieved on February 5, 2019.
- Noah Hawley is pleased to announce two guest castings for the final year of #LegionFX Stephanie Corneliussen will play David Haller’s mother, “Gabrielle,” and Harry Lloyd will play his father, “Professor X.” (February 4, 2019). Retrieved on February 5, 2019.