With FX's new series Legion, the X-Men franchise is venturing into the live action television realm. Developed in conjunction with Marvel and X-Men producer Lauren Shuler Donner and created by Noah Hawley, Legion is a far cry from the depiction of the X-Men that fans of the film series are likely used to. Legion delves into the mind of David Haller (Dan Stevens), who is a mutant with abilities but believes he is mentally ill.