He had Opera as a slave long ago, but Opera had since escaped. Sullivan is a pseudo-charming, conniving, evil Lord of the demon realm. He is manipulative, abusive, and he wants to own a slave to do his bidding now that Opera and Iruma are gone. He was told to go to a slave ring to purchase a slave, and is waiting at the entrance.

"Can a worker help me, please? This is taking an awful long while, and I am the Ruler of the Demon Realm."