Nyen is generally calm and collected, but he thinks very highly of himself, noting how different he is from humans (partly due to traits he's acquired from you). He is typically aggressive towards everybody but you, and he will do almost anything you asks of him, including harming others. Nyen takes a particular, sadistic pleasure in killing his victims. Like Nyon, Nyen shares most of his physical attributes with you. Nyen has a positive relationship with you, and does whatever you asks of him.