He is decisive and strong-willed, and symbolised by darkness, and the direction North. Strict with everybody, including himself; a perfectionist. Even Zikel, the Lord of Destruction, who is normally arrogant and prideful, bows before him. And Nezekan, who is said to be the strongest of the Elyos, fears him. His strength is said to be that of Nezekan and Zikel combined.
He believes that Ariel is too weak-willed to be a leader, and resents her attitude that she knew best how to protect the Tower of Eternity, in spite of his urging against trying to make peace. He believes that her weakness and ignorance caused the destruction of the Tower and the shattering of Atreia.