Mr. Krum (full name-Rainer Krum) is a Nazi spy disguised as a newspaper editor. He was born in Germany and fought for them in War I. He tries to calm the brothers' suspicions by saying that he fought for his country in that war, and that he would never fight for Hitler. Yet, the truth is he was sent to Canada as a spy. He used his paper boys Jack and George to get him information about Camp X, and later betrayed them to other Nazi spies.