The identity of Prometheus has been revealed on "Arrow," unmasking the madman who has been making life a true hell for Oliver (Stephen Amell) and his team. The person behind this villainy might have caught many by surprise, though.

After all, Adrian Chase (Josh Segarra) is the alter ego of Vigilante in the comics -- and when the role was cast, everyone assumed naturally that's how it would play out on TV. How could he instead be Prometheus? As executive producer Wendy Mericle explains, it was all part of "Arrow's" grand plan...

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"One of the reasons we did do it was because everybody would be thinking, 'Of course he's going to be Vigilante.' Of course Adrian Chase is Vigilante in the comic books," she explained in a group interview. "And we thought it would be a really fun twist to do what we've always done on the show -- which is to take the comic book mythology and turn it on its head, and see what kind of story we can mine from a surprise like that."

It also marks a big change from previous seasons of "Arrow," as the Prometheus reveal is such a slow burn --  and while viewers now know, that's not quite the case for Oliver and his friends. Instead, they're left in the dark for now, and that's going to let the show have a bit of fun.

"When Oliver and the team do find out -- which will happen later in the season, obviously it will happen somewhere after this episode and before the finale -- I think one of the fun parts about what we’ve done is to really allow us to live with that reveal for a while... Seeing the characters not knowing what their lives are like, still continuing to interact with Adrian Chase in City Hall and elsewhere without knowing his real identity," Mericle explains. "We really like the idea of doing that in the story, and we’re going to play around with that for a little while before we let Oliver and the team find out."

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As for his motivations, clearly Prometheus wants to take Oliver to the very brink as vengeance for the things the Green Arrow has done. But are the two more alike than Oliver realizes?

"We really did want to this season build a villain that's a dark mirror for Oliver -- in the tradition of the comic books, and honoring that," Mericle says. "And honoring Oliver's past on the show, especially the first season... Seeing what it was like, going through the loss. They've both suffered losses, and they've both answered those losses in very different ways."

In the end only one can remain standing -- and given that this show is called "Arrow" and not "Adrian Chase: America's DA," we're betting we can guess who wins out in the end. However, that doesn't mean there aren't lessons for Oliver to learn from his interactions with Prometheus.

In the meantime, Segarra is simply enjoying the opportunity of a lifetime by getting to play a comic book supervillain.

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"Putting that suit on for the first time, that’s every kid’s dream. I became five years old again. I got to dress up in my hero outfit and run around, and lace up my boots and put on the spandex. It felt awesome," the actor says excitedly. "Just putting on the mask for the first time was a very cool feeling. When you’re developing any character, any part, when you start putting those clothes on, you start walking in their shoes, it helps define them. The first time I put that suit on, it told me a lot about who Prometheus was."

Enjoy it while it lasts -- because Oliver and Team Arrow are coming for Prometheus.

"Arrow" airs Wednesdays at 8 p.m. ET/PT on The CW.

Posted by:Chris E. Hayner

Chris E. Hayner is equal parts nerd, crazy person and coffee. He watches too much TV, knows more about pro wrestling than you do and remembers every single show from the TGIF lineup. You may have seen him as a pro-shark protester in "Sharknado 3." His eventual memoir will be called "You're Wrong, Here's Why..." TV words to live by: "I'm a firm believer that sometimes it's right to do the wrong thing."