Short of it is he's going to be a Crested that, as the days go on, gets more and more into a feeling of being on a power trip. And he likes it. Game for pretty much anything, including any consequences that come of his actions.
Yeah. Nathaniel is usually Subby McSubby, but being Crested will have worked on him. That and he recently had a taste of power when he dommed for the first time for a friend's birthday.