2. The Dark Knight Rises (2012)
Before Man Of Steel and before the DCEU, Christopher Nolan's Dark Knight Trilogy concluded with a reasonably well-executed final chapter, The Dark Knight Rises.
But if this hidden image on one of its posters is what it looks like it is, then the film - at one point in time - may have been intended as less of a conclusion and more of a beginning.
The above poster is quite simple and there's not a lot going on, but one area in particular appears to contain the famous Superman symbol, tucked away to the side and disguised as a piece of rubble.
Take a closer look...
Look to the far left, directly in the middle. There's a piece of rubble (?) that looks a lot different to those found in the rest of the poster - it looks out of place and is hard to un-see once you know it's there.
This looks like the classic Superman "S" logo, just tipped on its side slightly.
Is this just a fanboy fever-dream? Was it an intern just messing around? Or is there actually something to it? With the DCEU in full swing and Nolan's trilogy fading into the past, we may never actually find out.