In reality, the real Titus Pullo was a centurion mentioned in Caesar's Commentarii de Bello Gallico for his bravery in Gaul, but he had no recorded role in the events leading to the crossing of the Rubicon.
While the fall of the Republic was a complex process driven by Julius Caesar's ambition and Senate opposition, the show depicts Pullo as the "butterfly effect" that makes war inevitable: How Titus Pullo Brought Down the RepublicRome :...
In the HBO series Rome , the claim that "brought down the Republic" refers to a specific chain of events in Season 1, Episode 2, where a petty personal grudge inadvertently sparks a civil war. The Fictional Catalyst: The Forum Melee In reality, the real Titus Pullo was a