"Do not keep us waiting, Agramon. Tell us what have you done to make demons feared? To not make a mockery of us? I'm afraid word of what you accomplished never reached my ears, but I can reward you now if you speak up," Lucifer said, knowing Agramon had nothing to claim he did. All Agramonn did was continuously complain to him about Killian and wanting to be King. Agramon had plenty of opportunities to try killing Killian and take the throne.
"I've fed on the living-"
"I've heard of many demons recklessly feeding on the souls of the living. That is nothing special to me. You spent so many years in this world and yet, your name has not reached far past the north. For a demon of high ranking, it's a little disappointing, don't you think? Instead of always complaining, I think it would have been better for you to work with Killian instead of inciting a feud," said Lucifer.