Klaus' grip on Tabora's became awkward as she launched herself off the wall, forcing him to let go or be hit. As it was, his nose did still receive some of the blow from the back of her head but not as much force as it might have otherwise. He brought his hand up to wipe beneath it just to see if there was any blood. A little, and it hurt like a mother, but beyond the face and the angry glare as he mockingly mouthed her parting warning, Klaus gave no other sign it had got to him. What the hell was that? So what if the DNA was used. Matt didn't go about transformed as a wolf killing indiscriminately. No, he chose his targets based on crimes or other indicators that deemed them in need of justice that the law might otherwise fail to bring forth. His friend was a bloody hero.
At the sound of Matt's voice, Klaus' eyes left the doorway that led out of the pub and found his friend. "Peachy," he said as he approached him, shooting a look at the bouncers. He was not in need of apprehension, though they seemed to wonder if they should take him out, too. "Hey, you don't want me going after her, right?" Klaus said, and that seemed enough to disperse them. "Nothing, Siv!" he retorted back to Sivvy's yell. "It's all good now."
Except it wasn't. Kat still was trying to get free from Matt, and she seemed less than happy the girl was gone. Desperate, even. "Hey, Kat," Klaus said as he looked at her. "Sorry to interrupt your little...bout of...experimentation, but I figured it was a bit better I did than Matty here. Jealous boyfriend and all." There was slight emphasis on the last word, though it was more with his pointed look than inflection of his voice. He wasn't about to say, "Given he has super strength and all sorts of fun little superpowers," especially after Tabora had said her bit. That was bad enough. "Let's get you home, though. I think some water and some rest and you'll realize... She chose to leave you. Didn't even bother to say bye."