As
Tribune and a man of military experience, Flavus enjoyed great significance in the plot. Along several others, including the Centurion
Sulpicius Asper, Flavus is described as one of the conspiracy's "leading lights" by Tacitus. He was close to
Gaius Calpurnius Piso, the figurehead of the conspiracy. Tacitus observes that Flavus' hatred for Nero arose suddenly while he was watching him perform on stage but failed to attack him in front of the audience because he would not have had a chance to escape. Tacitus also observes that it was rumoured that, after the success of the conspiracy, Flavus intended to murder Piso and give control over the empire to
Seneca the Younger, a fellow conspirator, because "it mattered not as to the disgrace if a harp-player were removed and a tragic actor succeeded him." For as Nero used to sing to the harp, so did Piso in the dress of a tragedian". ==Depiction in Tacitus==