Vergil's doppelganger is much like any other tool at his disposal. It's a deadly weapon that can copy his every move, doubling the damage he deal and - IS IT DANCING??

Note:

A request from @Contract, thank you very much! In which, Vergil has been subtly showing off for you like a peacock and his doppelganger, the embodiment of his desires, decides to shove him aside and show him how it's Really done. I saw your request and had a brilliant idea, I hope you don't mind that I added to your request!