Brutus, formally known as Marcus Junius Brutus, was a prominent Roman politician and a key figure in the assassination of Julius Caesar. He is often remembered for his role in the conspiracy that aimed to restore the Roman Republic, believing that Caesar's power threatened its ideals. Despite his noble intentions, Brutus's actions led to civil war and ultimately his own demise. His famous line, 'Et tu, Brute?' symbolizes betrayal, as he was seen as a friend turned foe. Brutus's legacy continues to spark discussions about loyalty, honor, and the complexities of political power.