10 Biggest Justice League Mysteries

2. Is There A Mystery Hero?

You may remember the teaser poster revealing Jason Momoa in his fetching Aquaman garb, which felt like a public safety poster advising people against making jokes about how lame the character is, at least to Momoa’s face.

It also bore the tagline “Unite The Seven”, which many feel was a reference to the Justice League itself. A simple finger count reveals there’s only six heroes in the team at present though, meaning there could well be a surprise member being hidden away from the public.

So who knows, maybe Martian Manhunter or Green Arrow will provide assistance when they need it most. It could also be a reference to Seven Seas of his kingdom, but this theory is way more fun.