@Shadowchaos: If that's it then they get raped, violently. Haseo as the Key of Twilight possesses all the abilities of the Eight Phases of Morgana, making him about as powerful as the Goddess Aura, a universe-level figure. Haseo has the Data Drain ability, effectively allowing him to take and manipulate the Data of his target. He has multiple weapons he can use and other powers, magic and whatnot. Nevermind what he can do with his Avatar, Skeith, the Terror of Death.
In the novels it's explained that when they use their Avatars, they accelerate and operate at lightspeed.