The Madness of Caligula: Rome's Cruelest Emperor?
Caligula was Rome’s most tyrannical emperor. His reign from 37-41 AD is filled with murder and debauchery, to levels even his infamous nephew Nero could not reach.
Eustache Le Sueur Gaius Caesar Germanicus Tiberius Gemellus Julia Livilla Julius Caesar Nicolas Poussin
Source: ancient-origins.net