A rumor reported by Suetonius and taken as fact by Cassius Dio says that this man intended to make his horse Incitatus a consul.
German politician Ludwig Quidde used this man's name for a metaphorical pamphlet attacking Wilhelm II. He came to power with the backing of Praetorian prefect Macro, and he later engineered the first deification of a woman in Roman history after the death of his sister Drusilla. A rumor reported by Suetonius and taken as fact by Cassius Dio says that this man intended to make his horse Incitatus a consul. For 10 points, identify this successor of Tiberius, whose nickname meant "little boot," a notoriously megalomaniacal Roman emperor.
German politician Ludwig Quidde used this man's name for a metaphorical pamphlet attacking Wilhelm II.
{Caligula} [or {Gaius Caesar Germanicus}]