Henry VIII's tyrannical reign transformed both England and its church.

Caligula, or Gaius, was a ruler whose reign was marred by his descent into madness.

Bad King John I earned his title by being a monster of the medieval era.

Ivan the Terrible was the grand prince of Moscow and ruled as the first Tsar of Russia.

Nero's blood-soaked and turbulent reign made him one of Rome's most infamous rulers.

Herod the Great ruled Judea, famed for his grand building projects and extreme brutality.