The true identity of the big bad will be revealed in "Arrow" Season 5 Episode 16. In this episode, Oliver (Stephen Amell) will be too close to discovering that his close friend Adrian Chase (Josh Segarra) is, in fact, the vigilante, Prometheus.

"Arrow" Season 5 episode 16 entitled "Checkmate," highlights the Green Arrow finally figuring out the truth about his oppressor. It will be a big blow for him, as Chase is his close friend. It would have never crossed his mind that the District Attorney and Prometheus are the same person who has been making trouble for him all season round.

In "Arrow" Season 5 Episode 16, Oliver should find out where the villain is hiding and fast because Chase has Susan (Carly Pope). In 'Arrow's" most recent teaser, Chase tells Oliver that he convinced Susan to come with him by slacking a juicy story under her nose. It appears that the journalist was tortured by her looks.

Chase seems to be pushing Oliver to snap and run after himin "Arrow" Season 5 Episode 16. Segarra, in an interview with IGN, disclosed that his character's mission is to psychologically break Oliver down. Chase never wanted to kill the Green Arrow. The reason why he kidnapped Susan is that she would play a big role in their cat and mouse game. He wants to see Oliver pleading at his feet because for him, the entire thing is just a game. Chase is all about revenge, and that is what he wants to do in the series. The upcoming episodes will be a revelation of how exactly he became evil and why he detests Oliver so much.

According to Segarra, his character is stirring pieces that he knows Oliver's not going to be able to catch up with. He added that Susan is one of the most important pieces of the puzzle and a good move in their chess game. Stay tuned for more updates about "Arrow" Season 5 Episode 16.