In this combination of the three part World's Finest from Superman: The Animated Series, Batman and Superman team up to defeat Joker, Lex Luthor, Harley Quinn, and Mercy Graves. Two awesome superheroes facing off against four awesome villains mainly Joker and Lex Luthor? How is that not cool? Even though these are Superman episodes, Batman, Joker, and Harley Quinn still have their own chances in the spotlight. Whether it be in an animated series, movies, or comics, Batman and Superman make a great team. The Dark Knight and The Man of Steel teaming up is always great at epic proportions. Of course, like always, Joker steals the spotlight the most and of course, you will always cheer for the superheroes to defeat him.