[quote=rawkhawk64]
This looks interesting... would it be possible to play as a mercenary-turned-host?
[/quote]

Someone who was a golden mercenary that gained powers during the Void Gate opening? Or a military man?

Both are totally allowed! 

If you mean gaining a Kage at the current point like when the wall went down, you'd need some sort of freak circumstance to occur for that to happen.