Belial found himself extremely amused by the brat's sudden flare in temper, barely managing to prevent himself from laughing audibly. Wasn't redheads having a fiery temper some sort of human stereotype? Belial hadn't expected it to apply in this case but it was already obvious that the boy wasn't exactly pleasant so perhaps the anger was to be expected, despite the extremely generous offer he was making the boy. Well, generous in Belial's opinion. After all, even if he was intending to consume the boy's soul he was at least planning to do it after giving him a far richer set of experiences than he would have if he were to simply die as he intended.
"Allow me to reassure you that, despite your rudeness, I am neither attempting to trick you nor am I a hallucination...and if you find my words cliched then you have no one to blame but yourself. Humans are such simple creatures, after all...it is to be expected that their imaginations would produce situations so close to the truth when they make these 'bad movies' of yours."
Belial paused as the brat demanded he revealed himself, but had no qualms about doing so. Indeed, he had been intending to show himself before the contract was made, but had been far too entertained by the boy's expressions and actions. Even now the little human seemed to be weighing up his options, possibly trying to decide whether to wish for this or that should Belial's words turn out to be true. It did seem fairly obvious that the boy didn't realise he was dealing with a demon at any rate and Belial saw no reason to correct him. He had been called many things by many people and had little interest in his nature, content to simply live his life as he had always done, feasting on souls in exchange for granting humans their desires.
After a short pause -during which Belial was mentally insulting the red-haired boy in as many ways as he could think of for his insolence- Belial stepped out of the shadows in front of the boy; he was dressed in human attire, as he tended to for these encounters, although perhaps the choice of a black suit would only enhance the boy's opinion that he was some kind of con-artist. His long pink hair was half pinned up behind his head to keep it neat, although most of it still fell in loose waves over his shoulders, and his pale gold eyes gazed appraisingly at the boy, watching his reaction carefully. Like most demons Belial had a fairly attractive appearance by normal standards and liked to believe he didn't look particularly menacing although who knew what this unpleasant boy might take as threatening?
"Satisfied now that you have a face to pair with the voice? Now tell me child, what do you desire? You have merely to speak your wish and I shall be sworn into your service, to stay by your side until your last breath..." Belial murmured as he knelt before Dominic, carefully taking one of the boy's hands in his before gently pressing his lips to it.