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'''Tyrael ''' is an [[Archangel ]] who rebelled against heaven in order to teach the [[Horadrim]] how to seal the [[Prime Evils's]] ' souls into [[soulstonessoulstone]]s, thereby trapping them for eternity. He is was captured by [[Baal]] after he fails failed to stop [[Diablo]] from releasing Baal and but was eventually freed by the adventureradventurers of [[Diablo II]]. He comes back when returned to the adventurer reaches adventurers in the [[Pandemonium Fortress]], the last bastion before [[Hell]], to offer his protectionsome assistance.  When it was clear that Baal had permanently corrupted the [[World Stone]], Tyrael decided that the only thing he could do for is was to destroy it. The destruction left [[Mount Arreat]] to nothing more than a crater, and put a devastating blow on the [[Barbarian]] tribes, who saw it as their life duty to protect the World Stone.  Tyrael has been missing for the last 20 years, and none has heard anything about him.