During his reign, he was supported and influenced by the Templars. Because of this, on 24 January 41, the Roman Assassin Leonius assassinated Caligula with a dagger in an underground corridor beneath Palatine Hill.
- In 1503, the Italian Assassin Ezio Auditore da Firenze compared Cesare Borgia—Captain General of the Papal armies and a member of the Templar Order—to Caligula due to their cruel and tyrannical manner of ruling.
- Historically, Caligula was assassinated by three of his Praetorian Guard led by Cassius Chaerea.
- In the Latin language, Caligula means "little boot", a nickname he acquired as a toddler when his father brought him to the battlefield dressed in a miniature military outfit.