Lucius Tiberius

Lucius Tiberius was an emperor who ruled Rome during the time of King Arthur. He was called "Caesar", who was the strongest in the continent and carried the title of "Sword Emperor". He has physical abilities comparable to a magical beast, a master strategist and warriors that would strike fear into the Rakshasa's of India, and was able to defeat Gawain and Bedivere but was ultimately defeated by Arthur with Excalibur. (Source: TYPE-MOON Wiki)