Kinda. The Dark Dragon (bad one) enabled the Fiends to enter Earth in the form of the Evil Deities, who began to mix their bloodline with humanity to make servants out of them. We do not know how many humans were affected and how many were untouched, but I gather it had to be a lot given how...
The "part-fiend" thing is really hard to pin down, because a LOT of humans have fiend blood. Anyone who is susceptible to the curse is descended from the fiends. The Hayabusa ninjas were also blessed by the ancient dragon deities, and it may be possible that this has given them superhuman...
And what would that be? Because I can recall Ryu sending someone a good 20 meters in the fucking air with only one arm, and I have yet to see Leon block a deathswing from a 100-meter-tall pseudo-God.
Teenage girls and even pre-pubescent girls' modern fashion does show off a lot of skin. You'd think their parents would do something about it. It's really creepy when you see some teenager in short-shorts and a crop-top roaming the mall with her dad, but whatever. Generation we live in, I guess...
Best gear is the jester hat, jester gloves, prisoner's tatter's and some pants I forget.
But since you look ridiculous, no one wears that (unless farming).
What armor set is that?
My favorite one is the Syan armor. But since it kinda sucks, I usually switch between using Havel's, Smelter's or Vengarl's (the latter of which I hate most).
And there you go.
I don't really want to go around annoying all of those people you mentioned with such a trivial thing, but were I to do so, I'm fairly certain they would all say the same thing: that 15% does not exist.