Cornell is the first of the Lords of Shadow, Dark Lord of the Lycanthropes.  He holds a piece of the God Mask. 

Cornell is one of the three main bosses of the game, and rules over a large part of the land with his lycan army.  Cornell, when encountered, tells Gabriel that the Lords of Shadow are dark, twisted remnants of the bodies of the three founders of the Brotherhood of Light after their spirits ascended to Heaven, and he confirms that he is one of them, which is also touched upon with his human appearance, as he is wearing Brotherhood armor on the lower part of his body.  He is then aptly defeated by Gabriel, who is then rewarded with his Cyclone Boots.  It has been confirmed that he is not the same Cornell as the one playable in Judgment and Legacy of Darkness.