Seven persons of interest have become involved in the experiment.
Now this assortment of people was peculiar. Each one of them had an air around them that distinguished them greatly from one another. The longer he allowed himself to bask in their presence, the more he wanted to interact with them to see what their story was. How they talk, how they move, what makes them tick, their interest -- everything of that sort. The one place to start was to simply begin talking with them, right?
He lifted his hand to tip his hat with his gloved fingers, gracing the audience in front of him with a smile and a simple nod of the head. "Grüßgott," he greeted easily, almost like it was routine to go through such interaction. "I am Stefan Brandt, but you may call me whatever you wish." Whatever they choose to call him will, of course, give him indicators as to who it was that was messing with.