Nazi dictator responsible for the Holocaust and millions of deaths during WWII.
A Soviet leader whose purges and forced famines killed millions.
A serial killer who murdered over 30 women across the U.S. in the 1970s.
Leader of the Khmer Rouge responsible for the Cambodian genocide.
Serial killer and cannibal who murdered 17 young men.
"Blood Countess" is rumored to have killed hundreds of girls in the 16th century.
Russian Tsar known for his violent reign and mass executions.
"Killer Clown" who murdered 33 young men and boys.
A Soviet serial killer who murdered over 50 women and children.
Cult leader who orchestrated brutal murders in the 1960s.