During a visit to the set of Superman, Nicholas Hoult told us more about Lex Luthor's motivations and his history with the Man of Steel.

In fact, the idea of Lex Luthor and the Joker teaming up is the subject of the classic animated movie The Batman/Superman Movie: World's Finest, which marks the first crossover between Superman: The Animated Series and Batman: The Animated Series all the way back in 1997.

As Comicbook.com detailed, Luthor and the Joker teamed up in a three-part 1997 episode of Batman: The Animated Series and Superman: The Animated Series. The Joker proposes a deal to Luthor, offering to take down Superman for a substantial price. Ultimately, Superman and Batman team up and stop the dynamic duo of villains.