If I'm not wrong then agito is a cop, ryuki is a journalist, blade work for BOARD, Faiz work part-time, kabuto is a freelancer (he have gone through too many job lolz), Hibiko work for his organization. Not sure about Den-O and Kuuga. Good for you that you know this but don't say that in the future ...

So the red Overlord is similar to Baron, the green one is probably similar to Ryuugen, not just in term of form, but also in term of personality. Maybe the Overlord of the Overlord will be based on Gaim or Zangetsu. It would be funny. If you consider that Sagara also a Overlord, then he maybe based...

About Zangetsu, i think Kouta didnt use all of his power. Snip