Octavius is Caesar’s nephew. Called to Rome by his uncle, he is greeted on its outskirts by the news of Caesar’s death.
Despite Antony’s warnings, he enters Rome before it is safe, and goes to Caesar’s house, where he meets Lepidus and Antony. He is not easily impressed, and refuses to let Antony take the main leadership role in the war against the conspirators, simply announcing what he intends to do and letting the other deal with the fact. This does not necessarily serve him well: he is not as great a general as Antony, and his force is defeated by Brutus’s at the battle of Philippi. He is defiant towards the conspirators, though willing to honor them once they are dead. He is proud of his family name. His further adventures can be found in Antony & Cleopatra.