his “coldly cruel demeanor on the ramp” (ushmm.org) where he chose whether a person was sent to work or to the gas chambers. This moniker became more relevant as he started his work, again, with von Verschuer who was “a leading scientific figure widely known for his research with twins” (ushmm.org). Mengele and von Verschuer began performing several “...legitimate research protocols using twins as test subjects throughout the 1930s” (ushmm.org). The work was usually immensely gruesome, so trained medical