Irma Grese
Irma Ilse Ida Grese (7 October 1923 – 13 December 1945) was a Nazi concentration camp guard at Ravensbrück, Auschwitz II-Birkenau, and Bergen-Belsen. She has been widely known as the "Hyena of Auschwitz" and the "Beast of Belsen" for the atrocities she committed during her service.