How to rank Roman Emperors? Which emperors would be the greatest?
This is an impossible question to answer as each Roman Emperor dealt with severely different problems, situations, and governments. Some of the most famous and revered rulers of the Roman Empire were Augustus, Marcus Aurelius, Hadrian, Diocletian, Septimius Severus, Trajan, and Constantine. There is no way of equating which was the greatest ruler, as it is both a matter of opinion and each figure dealt with completely different problems and issues.