Gaius Julius Caesar Germanicus (Caligula), Bartholomeus Eggers, after 1674
Caligula was the third emperor after Julius Caesar. His reputation is far from enviable: he is described as cruel and even insane. Caligula was his nickname; it means a small shoe or boot. It may have referred to the small army boots that were made for him when he accompanied his father’s legions as a boy.