Ulrich's Demeanor depends on what will get him out of his current situation with his head still attached and preferably, some extra in his pocket. As a rule, he is disarmingly charming and agreeable right up to the point where the ends of his guns become lodged uncomfortably in the small of your back.
Ulrich is either completely in control of himself and ideally, everyone around him, or he's convincing enough that no one can tell when he isn't. a natural showman who's often two steps ahead in a plan that's not always clear to anyone else, it's difficult to see where the performance ends and the person begins.