User blog comment:SayuriDarling/The Dark Prophecy Official Discussion/@comment-4902593-20170528053345

I believe that the third Emperor is Caligula. He was really disgusting. Nero looks tame in comparison. He had a swift white horse Incitatus who won races for him. Also the line ,"To walk the path in thine own enemy's boots. is a play on Caligula's name little boots.

Caligula's real name was Gaius Julius Caesar Augustus Germanicus.