I'll revamp this thread pretty soon, as much of the scans/info need a serious update. Until then...
I have been arguing this for over a decade, but we now have evidence which confirms, beyond the shadow of a doubt, that ALL versions of Mxy who have appeared across ALL types of fiction/media(be it pre-crisis, Lego movies, or DCAU) are the SAME being. Mxy does not have different incarnations/versions -- he is one of a kind; completely unique: (please log in to view the image)(please log in to view the image)
It doesn't say that... Mxy actually notes that he isn't one-of-a-kind in any sense and there's infinite variations of him. He's just one of the few characters/variations that sees the "pig picture", i.e. the fact that he's a fictional character.
Deadpool, Sardonyx, She-Hulk and Delirium have all noted the same thing, yet not all of their appearances are canon; unless you'd have me believe Deadpool can solo the Marvel universe?