Re: Jack of blades mask
I believe the story goes that Jack is the oldest spirit/soul/what have you, and he forged his Soul Mask out of pure evil (getting a little existential here) and his spirit lives in the mask. Once worn, the mask corrupts and ultimately dominates the host rather quickly (A matter of seconds according to the evil ending of Lost Chapters) and Jack has a brand-new body to wreak havoc with. What you destroy in the Chamber of Fate was the last poor sap to try it on. It could be a (ex-) Hero or a regular guy. But it doesn't make sense for it to be the last Archon, because he already had the Sword of Aeons, and I don't think he'd hide it then look for it again. I'm not sure about what's going on with the dragon, though.