Anyone else figure it's about time the head arch-angel shows up? The way I see it he'd be perfect for Siren VS Paladin. After all the Dark school has two greater demons Malacoda and of course Adramelech represented, and hey like Adramelech there's even a mage dedicated to Malakai. Given his war like mentality, if I'm reading the OP plot stuff correctly anyway, he could be a Soldier and give friendly holy creatures either a bonus in Melee or Armor.