How is lex luthor portrayed in batman v superman?

Quick Answer
Lex Luthor is played by Jesse Eisenberg as a villain who seeks to pit Batman against Superman in an attempt to eliminate the two heroes.
Explanation
In Batman v Superman: Dawn of Justice, Lex Luthor appears as the primary antagonist orchestrating a conflict between the two superheroes. Portrayed by Jesse Eisenberg, Luthor’s character is depicted as a charismatic, high‑tech strategist who manipulates global events to create a crisis that forces Batman and Superman into a battle. His plan centers on the belief that humanity cannot be saved by both heroes working together, and he uses the public’s fear of Superman to galvanize opposition. Eisenberg’s performance is noted as an unorthodox take on the character, diverging from traditional portrayals that rely on physical intimidation or grandiose speeches. Critics and audiences responded with mixed reviews, citing the portrayal as both fresh and uneven. The film establishes Luthor’s ambition and intellect, but his influence is largely confined to the narrative’s initial incitement, with a brief appearance in Justice League’s director’s cut.