5) Batman
In retrospect, it was the perfect decision to break up the Dynamic Duo and not feature Robin in 1989’s Batman and its sequel Batman Returns, as it helped establish the darker tone the film was going for. However, at first, the Boy Wonder was seen as such a big part of the Batman mythos that he almost featured in both movies.
First, he was going to appear in Batman, with Kiefer Sutherland lined up to play him until the character was removed from the shooting script. He got even closer to appearing in Batman Returns, though. Tim Burton’s idea for the character was for him to be a young black car mechanic. Marlon Waylans actually signed up for the part and attended costume fittings. Eventually, though, it was decided to hold him off until the third film, where he was played by Chris O’Donnell.