Reinhard Heydrich - Heydrich was the head of the Gestapo and was Himmler's closest collaborator in the planning and implementation of the Holocaust. He was responsible for coordinating the deportation of Jews and other minorities to the camps and for developing the methods of mass murder used in the camps.
Adolf Eichmann - Eichmann was a high-ranking SS officer who played a key role in the organization of the Holocaust. He was responsible for the logistics of deporting Jews and other minorities to the camps, as well as for the selection process that determined who was sent to the camps and who was allowed to remain in Germany.
Josef Mengele - Mengele was a German physician and SS officer who performed medical experiments on prisoners in the Auschwitz concentration camp. He was known as the "Angel of Death" for the cruel and inhuman experiments he conducted, which included injecting prisoners with deadly bacteria, performing surgeries without anesthesia, and removing organs from living people.
Rudolf Höss - Höss was the longest-serving commandant of the Auschwitz concentration camp. He was responsible for overseeing the construction of the camp and the implementation of the mass murder operations that took place there. Höss was captured by the Allies after the war and testified at the Nuremberg Trials, where he admitted his role in the Holocaust.