With a career spanning nearly three decades, the vast majority of it spent with his face (or at least, his mask) firmly in the spotlight, you'd think we'd know just about all there is to know about the legendary Rey Mysterio. And for the most part, we do.
For instance, we're all well-versed with his pro-wrestling journey: from training under his uncle at the age of 15 and his ECW beginnings, to moving to WCW and WWE and becoming one of the industry's most immediately recognisable, er, 'faces'. We also know he is one of the greatest ever exponents of lucha libre in North American wrestling, a game-changing innovator who helped revolutionise the style of the business.
And furthermore, we know he isn't done yet. Ol' King Mystery might be in the twilight of his career, but he's still knocking them out the park in Mexico and Lucha Underground - and soon, excitingly, for WCPW in Newcastle on 29 April (shameless plug: tickets available here!).
Yet despite our intimate familiarity with Rey, there remain quite a few - sigh - mysteries about 'the Master of the 619'. For example, which popular horror franchise did he show up in? And with which star of Friends was he allegedly romantically entwined?
Let's peer behind the mask to find out.
8. He's A Kraniophiliac
No, it's not a weird sexual fetish involving large wading birds (that'd be grudiaphilia, obviously). Like his lucha libre buddy La Parka, Rey Mysterio is fascinated by skeletons, and in particular skulls, his interest characterised by a couple of tattoos on his left calf, not to mention his numerous attires incorporating osseous motifs.
A devout Catholic, Mysterio explained his morbid interest as being a constant reminder of his human mortality, and the importance of never taking things in life for granted. He explained in greater detail in his autobiography:
It's a Mexican thing. In Mexico, All Hallows Day and All Souls' Day are celebrated, a period of time during which children who have died are celebrated. It's a big deal in Mexico.
See? Not weird in the slightest.