Asmodeus' eyes glanced at the blackness spreading from the chair and onto the carpet as Phobetor took his seat. As he spoke, his eyes looked up and stared back into Phobetor's own. Holding his gaze, Asmodeus developed a slight sneer at first but smiled and shook it away. He didn't appreciate having being lumped into the same category as this petty dream eater. He is a King of Hell, damn it. So what if his brothers and sisters held higher stations and more power? That wasn't his decision, but of the Emperor's and one that he would respect. He was proud of his rank. He was proud of who he was and he was going to make it clear that he was not to be compared to a simple dream eater. Needless to say, he was a bit sour at Phobetor for having being compared to him and reduced in a sense. Sitting up straight and interlocking his fingers, he waited until Phobetor was finished speaking before he took his turn in the conversation.

"[B]Though we may both hail from the 'Underworld' as you put it, we are not the same. We are not family and we will never be related as such.[/B]" he said, snapping one of his fingers as a book appeared before him. Opening it, his eyes scanned its pages as he read, continuing to speak. Not affording Phobetor the respect of direct eye contact as he felt disrespected and insulted by his comments to his rank and station. 
"[B]You are a God and I am no such thing, the opposite in fact.[/B]" he turned a page of his book. Its cover holding no writing or marks.
"[B]If it was your intention to fill my Andrew's dreams with terror, then I must apologize but no such thing will be happening. Now, or ever.[/B]" he closed the book and it shot back towards its place on the vast book shelves that lined the walls.
"[B]While he may require sleep, food, and other necessities for human life, I require no such thing. While he sleeps, I am always awake. So if you wish to invade his dreams, I'm sorry to say but that will be impossible as long as he and I share a mind, a body, and a soul.[/B]" smiling, he leaned forward in his chair.
"[B]So, might I ask that you please leave my cherished Andrew's dreams and leave him be? Phobetor, was it?[/B]" he smiled, a strange knowing gleam in his eyes.

His powers afforded him precious information, a intimate view into others' hearts to as to manipulate them and cause chaos. He knew something about Phobetor and he wasn't afraid of hiding it.