User blog comment:Eobard95/Is Vigilante the real Adrian Chase - Still portrayed by Josh Segarra?/@comment-24152851-20170712110258/@comment-26624146-20170712111627

The name "Adrian Chase" would be the name Simon's twin brother was given after being adopted by the Chase family. Simon Morrison erased all traces of his existance from the internet yet there was a whole background on Adrian Chase so Simon could have been using Adrian's background as his own. Simon was already training to become Prometheus after Claybourne's death in 2012 while Adrian was still just a lawyer until 2016 when whatever happened that drove him to become Vigilante happened, which was just a few months before Simon returned and took Adrian's identity and held something over him to ensure Vigilante wouldn't kill him and had to watch as Simon reuined his reputation using his name.