@Heartz13
Yeah, I'm going to go with Marchosias.
Marchosias: "... commanding thirty legions of demons. He is a strong and excellent fighter and very reliable to the conjurer, giving true answers to all questions."
Vassago: "... ruling over twenty-six legions of demons. He can be persuaded to tell the magician of events past and future, can discover hidden and lost things, and has a "good" nature."
"Persuaded" seems like it could be too much effort and I can be quite lazy...