Professor Bill House betrayed Berlin because he was afraid that he would take his place. Berlin is different from other members. When I came out, I was dressed in a straight suit, completely the elite of white-collar workers in the workplace. So Berlin gives people the illusion of being gentle. In fact, he is just a glamorous person, but his real identity is a criminal involved in many cases. The professor was later afraid of Berlin's ability and that he would surpass himself, so he betrayed him.

Berlin is a well-dressed criminal, and all his cases are shocking. He was involved in 27 robberies, including jewelry robbery and robbery of auction houses and securities companies. Berlin once stole 434 precious diamonds from the Champs Elysé es in Paris. Before joining this gang, Berlin was already a notorious robber.

Berlin not only has extraordinary stealing skills, but also has a wise brain. Berlin is ruthless. Although he is smiling, all the members know that he is a grim-faced smiling tiger. As other members commented on Berlin, he controlled all the killings. When the robbery was carried out, the professor handed over all the command to Berlin, which shows that the professor at this time was full of trust in Berlin.

However, the uncertain weather in Berlin makes everyone feel insecure. Later, the professor was afraid that he could not control Berlin's viciousness, so he chose to betray him. For a professor, the people he uses must serve him wholeheartedly. People with strong psychology are not easy to be controlled by him, although they are also very capable. Therefore, between him and Berlin, it is inevitable that two tigers will compete and the winner will be king.