During the Television Critics Association press tour, FX announced that the upcoming third season of Legion will be its last. The news is not entirely unexpected, as showrunner Noah Hawley previously expressed that he envisioned Legion as a three-season show. 

Since then, FX Networks CEO John Landgraf has confirmed that FX will follow through with Hawley’s original plan for the series to reach a natural conclusion.

Along with annoucing the series would be concluding after its third season, the show’s official Twitter account confirmed two significant castings for this final run – that of David Haller’s parents, Charles Xavier and Gabrielle Haller.

Professor X will be portrayed by Harry Lloyd, best known for his work on Counterpart as well as on Game of Thrones (as Viserys Targaryen). Stephanie Corneliussen, known for her work on Mr. Robot, will play Gabrielle.

In the comics, Xavier and Gabrielle met when Xavier was hired to help Gabrielle break through a catatonic state she entered after enduring years’ worth of trauma as a Holocaust survivor. The two fell in love, but broke up; Xavier left not knowing that Gabrielle was pregnant. Gabrielle would hide David from Xavier for years, but eventually needed his help after David’s powers began to cause damage to those around him.

Originally thought to be schizophrenic, David Haller (Dan Stevens) was later revealed to be an immensely powerful mutant who was being tormented by a malicious parasite. Now, Haller is the only force standing in the way of Amahl Farouk (Navid Negahban) from destroying the world. 

Legion stars Stevens, Rachel Keller, Jean Smart, Bill Irwin, Amber Midthunder, Jeremie Harris, Aubrey Plaza, Jemaine Clement, Hamish Linklater, and Navid Negahban.

The series returns to FX for its third and final season sometime in 2019.