How does lex luthor appear in dc movies?

In the Warner Bros. Superman film series produced by Ilya and Alexander Salkind, Lex Luthor—known in the films as Alexander Joseph Luthor—is the primary antagonist to Superman. Gene Hackman delivers the performance, bringing a charismatic yet ruthless depiction of the character. Luthor’s storyline includes his relationship with a film-original girlfriend, Eve Teschmacher, who later entered comic books and other media adaptations. These movies, released between 1978 and 1981, established the cinematic portrayal of Lex Luthor within the broader DC film universe.