4) Catwoman
Catwoman obviously played a major role both in Batman Returns and The Dark Knight Rises, but there’s still plenty of ground for another movie to explore if she were to be introduced in the DC Extended Universe. With an older Batman, common sense says that we’ll have a slightly older Selina Kyle as well, giving her and Bruce’s relationship the sort of depth that the aforementioned versions were mostly lacking.
On a side note, a pretty brilliant casting suggestion currently doing the rounds is Watchmen star Carla Gugino, and she’s admitted being interested in the role!
Getting back to the point though, and those of you thinking about the fact that Batman and Catwoman have more often than not been allies (and lovers) over the years aren’t wrong. However, look no further than the character’s current solo series to see how she could end up taking on a villainous role opposite Ben Affleck’s Caped Crusader.
Selina has given up her cat burgling ways and risen up the ranks to become one of Gotham City’s biggest crime bosses. This actually feels like a natural evolution for the character, especially if she’s been operating in the city for as long as Batman.