Nazi kingpin Reinhard Heydrich, aka 'the executioner of Prague' and 'the blond beast', is the inventor and executor of the Shoah and one of the most vicious Nazis known to the Third Reich. He was Eichmann's chief and Himmler's right-hand man. In the SS they called him 'HHhH': 'Himmlers Hirn heißt Heydrich' or 'Himmlers Brains are called Heydrich'. In May 1942 he was attacked in Prague by the resistance fighters Jan Kubiš and Jozef Gabčík, who had been dropped from England in Czechoslovakia.