#4. Rey Mysterio was not the very first masked WWE Champion
First thing's first - Rey Mysterio was actually WWE Champion at one point, for all of you about to nitpick.
Yes, he's most famous for holding the World Heavyweight Championship. However, in 2011, following CM Punk's defeat of John Cena and that year's Money in the Bank PPV, where Punk "left" the company with the title, Mysterio won a tournament to be crowned the new champion.
However, he's not the first masked wrestler to hold that title - although the other one held it barely longer than Rey did.
At King of the Ring 1998, then-champion Stone Cold Steve Austin defended his title against Kane. If that PPV sounds familiar, it's because it was the same show where Undertaker and Mankind had their infamous Hell in a Cell match.
So, yes, the Devil's Favorite Demon only held the WWE Championship for a day, but, you know, how many WWE Championships have you won? That's what we thought.
Coincidentally, Kane's other World Championship reign would come from defeating, of all people, Rey Mysterio at Money in the Bank 2010.
Kane wasn't wearing a mask then - obviously - but it certainly is weird how things like this kind of come full circle.
Speaking of which, let's move on to the man Kane defeated for the title, Stone Cold Steve Austin.