Zubaba shutting them up was a very good thing, all told, as they were distracting him, while Kuribolt makes him turn around to an unpleasant sight.

It doesn't look much like he's upset, though. You're getting a raised eyebrow, and, if anything, he seems to have let his guard down.

"I am not familiar with either of you, but I'd like you to know that I don't like it when people take my things."

He's well aware he's quoting Stark, but for some reason it seemed appropriate.