User blog comment:TheDoctor230/Vigilante's Identity/@comment-31390111-20170801140705

I seriously doubt it's Helena, I feel more like the "real" Adrian Chase is Vigilante. Why would Simon Morisson, the man we know as Adrian Chase, choose that specific nickname ? It's also a thing they love to do in the Arrowverse, "Jay Garrick" aka Hunter Zolomon. Whereas the Real Jay was just locked up in Hunter's lair.

(Or atleast someone who's acquinted with the Real Adrian, like his brother or something)

Also after Vigilante & Prometheus met, we didn't see Vigilante anymore. Does Prometheus have him locked up somewhere ? There could have been more than just "I want to kill Oliver" thing why he made him disappear.