DC fans are hopeful that a major supervillain team-up could be coming to James Gunn's new DCU, especially after the way Superman ended. But before we get any further, be warned: there are Superman spoilers ahead, so turn back now if you haven't seen the movie and don't want to know what happens!
Well, if you've got this far, you'll know that Superman ends with Lex Luthor heading behind bars – the bars of Belle Reve, specifically. In DC Comics, Belle Reve is a prison that houses incarcerated supervillains and other metahuman criminals and has also been used as a base for both Task Force X and the Suicide Squad.
