Good stuff so far. :D

In case some people wanna figure it out for themselves, I'll throw my speculation in a hider.

[hider=Speculation]Reyes is RPG101. His name makes it pretty obvious. Reyes Pastor de Guerrero = RPG, Centeruno = 101 (center being the 100, uno meaning 1).

I'm almost positive Calista is Smiral, just based on her way of speech and demeanor.

Daniel might be Sole, just because of the last part of his name (del Sol). Could be other people though, idk.

I only have vague guesses as to who the warden is.[/hider]