The Dark Knight

The Joker is called Batman’s greatest enemy because he is Batman’s classic archenemy whose chaotic, psychological attacks directly challenge Batman’s order‑and‑justice mission.

Lex Luthor's key villainous strategies center on his unmatched human intelligence, vast corporate wealth, and manipulation of politics and technology to defeat Superman and assert human supremacy over superhuman power.

In most versions, Batman's primary weaknesses are his lack of superhuman abilities and his reliance on fear and intimidation, which can be countered by enemies who are either immune to fear or who exploit his moral code.

In DC Comics and its film adaptations, Lex Luthor typically serves as the primary antagonist who manipulates the Batman-Superman dynamic, exploiting their conflict over humanity's future to pursue his own agenda of control or destruction.

The 2019 Joker movie was directed by Todd Phillips, inspired by the DC Comics character and drawn from Murray Trumpman's 1988 graphic novel Joker's Five Point Explosion.