Richter's eyes narrowed beneath his fluted helm as he slowly pulled the greatsword off of his back and held it at his side, the gleaming steel blade shining in the sunlight.
"Actually, it is my business, since the man that you are assaulting helped me out earlier, and I believe that ending a fight in which he could get hurt would qualify as making us even. Besides, I happen to hate thugs and bandits to the point that at the moment, the only reason why I haven't started divorcing your heads from your bodies and spilling your innards and blood across the ground is because I'm willing to give you a chance to surrender and walk away," the knight responded, using his height to his advantage as he looked down at the thugs, standing a good four or five inches above most of the ones facing him.
He then gestured to his sword with an almost lazy twirl of his sword hand, "Leave now and forget whatever quarrel you have with this man, and I'll let you live. If you don't leave and continue to harass him, or even try to attack me...well, I have ten years of knight training under my belt and several years beyond that of true combat experience to use to cut you all apart like a common pig at the slaughterhouse."
"So, with that in mind..." Richter said as he brandished his greatsword, which was almost three-quarters his height and as wide as his armored forearm, and pointed it at them in challenge. "Make your decision...and make peace with whatever powers you believe in should you decide to continue this fight."