NPCs

We know all the Saga characters, the Vampire Hunters, Ghostly Eastern Vampires, and Giant Wolf are probably just costumed people clothes for Halloween, but how does an Imp fit in the holiday and who are Don Quixote and Johnny Rockstar? I'm guessing guitar dude is Hurricane John, since they have the same hairdo.

Speaking of Saga characters, I wonder why Ruairi and Tarlach are in their Chapter 1 younger forms, and whatever happened to the other members of the drama staff...

Imps are pranksters aren't they? The trick in trick-or-treat.

Don Quixote is a knight with some odd adventures...there's like a whole novel about him and his donkey, not horse. Spanish origin.

I'm not quite sure who's....Johnny ROckstar.

“	skinny horse	„
—Wikipedia

Bump for donkey confirmation?

My bad, my fail courses in Spanish got the best of me.

Johny Rockstar is Psy in Korea, they renamed him in NA after an no-longer famous American term.
The Giant Wolf, Vampire Hunters, and Jiang Shis are not costumed, do not assume so without evidence please.

What happened to Johnny Rockstar? I mean, why is he no longer famous?

Also, according to your guide, there's one more character that's missing in NA: Spiderman or something?

I don't think Johnny Rockstar was an actual person, correct me if I'm wrong. I think it's just archaic slang. And they probably renamed Psy and removed Spiderman/Spidertyman due to copyright reasons. Don't worry, the only notable thing about Spiderman is that he had an alternate version of the spidershot skill that doesn't need a bow/crossbow. Though, even in KR, Dance Time didn't have gangam style's animation which is odd.