Hmm, you did seem to be too smart for plaz.
The thing is, Plaz is "smart" enough to speak properly, but he has no idea how to act morally and kindly in a social environment towards others. He is manipulative and fake, and goes out of his way just to make people unhappy or to get a laugh. He has no reason for his doings except that he has no actually life, and has no kindness, care, or compassion for other beings. He is arrogant, defiant, and an overall terrible person. He is merely a test of patience. He expects Love and gives none. He just wants and wants until he is the ruler and then he demands more of everyone. He always needs the last word and to make himself feel better and smarter. His only experience is in hate, and one day he'll regret all that he's done and said and will want to take it back. And if the boy acts like this in the "real" world.....well, then Dio help his soul.
Whether or not Pinto = Plaz I'm unsure of, though.