(Warning - the following contains potentially HUGE SPOILERS for Batman v Superman: Dawn of Justice, and the extended DC Cinematic Universe beyond it. As Taylor Swift so sagely advised: "Don't say I didn't say I didn't warn ya"...)
There aren't too many movies on the cinematic horizon more fundamentally exciting in their very conception than Batman v Superman: Dawn of Justice. After all, not only is it set to be a movie all about Batman and Superman punching one another, but it's also (as the follow up to Man of Steel) likely to prove to be the moment that the DC Cinematic Universe truly comes into being.
Which is, of course, why what happens in it already matters so darned much to all of us - and why rumors about the movie are already flying as freely as a Lynyrd Skynyrd song about unchangeable birds.
One of the most intriguing theories currently doing the rounds, of course, is the one which suggests that the Joker we're set to see in Suicide Squad (and, odds are, in Batman v Superman) isn't quite who he seems.
The Joker Might Actually Secretly Be...Robin?
There's more on exactly why that could be the case right here, but the general gist of it is that there's some pretty compelling evidence to suggest that a former Robin - most likely Jason Todd - was transformed into The Joker by...The Joker himself.
Yup, that's right - in the DC Cinematic Universe, there may well have been - or be - two Jokers running around.
But, if that's indeed the case, then...
Where Is the Original Joker Now?
After all, the theory very much suggests that the Joker we've seen thus far, as played by Jared Leto...
...isn't the original Joker.
Instead, there would presumably have been - or still is - another Joker running around Gotham, menacing its populace. If so, though, what's happened to him?
Well, there are two main possibilities:
1. The Original Joker Is Dead
After all, if the sort of horrifying, torture-based awfulness that transforming Batman's sidekick into a miniature Joker would involve went down, then there's every chance that Batman would have snapped, and straight up killed the Joker.
Even if not, though, the existence of a 'new' Joker would surely suggest that the original would have died somehow, right?
Well, perhaps - or perhaps not. Y'see, it's also possible that:
2. There's Another Joker Out There Somewhere
One who, perhaps, has chosen to take his chaotic insanity to a whole new level, by transforming himself into an unstoppable, unkillable force of nature - and what better way to do that than to create a never-ending stream of replacements.
If that were the case, then, it would logically follow that we will, at some point, see the original Joker on screen too.
Which, in turn, means we might finally get to see the long-dreamed of Willem Dafoe version of The Joker (as envisioned below by JeffStahl_art)...
Which would be insane...and ridiculously awesome to watch.