I would have thought that simply "emperor" would suffice.It is commonplace in Roman society to address me as Imperator Caesar, or simply Imperator. However I will also settle for a term originating from my native tongue - "mate."
Or you can just go with the many names bestowed upon me by my missus. "You dumb f***" gets a workout on a nearly daily basis.
Re Rowles, I remember watching a reserves game where he was going so fast his legs were doing that blurry circular thing I thought only happened in animated cartoons.