Legion features a character named Haller.
Legion (Marvel Comics) . He is the mutant son of Professor Charles Xavier and Gabrielle Haller . Legion is an American cable television series created for FX by Noah Hawley , based on the Marvel Comics character David Haller / Legion . Hawley wanted to show Haller as an `` unreliable narrator '' , including mixing 1960s design with modern-day elements , and filming the series through the title character 's distorted view of reality .