Septimius Severus, Rome's first African emperor.  Born in Leptis Magna, he ended the civil war that erupted following Commodus' death during the Year of the Five Emperors, restoring order to the Empire, cowing the Senate, strengthening the borders, and ushering in a new era of warrior-emperors just in time for the Crisis of the Third Century that would shortly bring Rome to her knees.  Rome wouldn't look this good again for A LONG TIME.  Pretty impressive resume, except for the whole dying-and-leaving-the-Empire-to-Caracalla bit.