((SPOILERS FOR BOOK 1, 2, 3 and 4))
I think that Matt is Chaos. Think about it.
Pedro is Meco Paco
Jamie and Scott are decendant of Native Americans
Scarlet is Mo Ling (or something...)
So, Matt is Chaos or his REAL name. Why else wouldn't he reveal it...?
Yeah, so I think that Richard will have to kill Matt with the knife after he or Scott turns evil.
Hope not but would be quite good!!
Plus, I think Scott is going to turn. Plus, I think that he was deliberately not helping when Pedro nearly got killed in Prof. Chambers House...