Constantine

Constantine’s placement on this list might seem harsh to some people, as it wasn’t terrible – but it just didn’t do very much to a brilliant standard.

The 2005 offering’s biggest flaw was that it was so different to the source material. Keanu Reeves played a relatively entertaining character – but he wasn’t John Constantine. Not even close. And a decent supporting cast that included the likes of Rachel Weisz, Tilda Swinton, Djimon Hounsou and Shia LaBeouf couldn’t make it a major success.

It’s worrying because if the DC Extended Universe wants to explore the supernatural elements of DC Comics – with a Justice League Dark movie, for instance – it could end up shying away from the source material too much and having a ridiculously goofy ending.