User blog comment:Eobard95/Is Adrian Chase actually Prometheus and Vigilante?/@comment-3221148-20170210223813

There is a little thing about Vigilante somehow being a bank employee and a hacktivist, as mentioned by Felicity. Which implies that there's something more than just him being Adrian Chase (or maybe it's a continuity mistake...)

Maybe there's a Team Vigilante?

One thing speaking in favor of Adrian being Prometheus is that on the character list back in the summer the only antagonist role sans Tobias Church was "James", described as a guy who can smile at you one moment, then stab you in the back some other time. Although being Vigilante would already make Adrian fit the bill, it would also mean that there was no place for Prometheus, the main antagonist, on the major list of roles. But then again, it had Tina Bolland as the police officer dedicated to fighting vigilantes, so... Must have been a rewrite.

But, anyway, Vigilante and Prometheus have very different MOs and different sorts of problems with Oliver and Green Arrow. Adrian Chase could be one OR the other, but I think he's shown to be favorable towards, at least, Oliver Queen, the Mayor.