While the face was not familiar, that walk surely was. It did not take him very long to put two and two together. A person did not walk like that as a servant, and the only meta he knew was his ward. This was impressive, really. Most metas had the concentration of their hair changing, or their eyes. But to be able to focus on their face so easily? To be able to focus on other things. It was not a common sight, no matter the age.

"I'm sure she would be. However, sneaking into my private office with a different face is sure to get her stunned." He said cheekily. Peter was protective of his ward and their secrets. For someone to find out about their plans... for there to be any risk to her did not sit well with him. There was just this instinct for loyalty. One that seemed to stick out aside from the smarts. Probably the only reason he had been sorted into Hufflepuff in the first place. And he knew his ward.