Aside from the fact that it had been assumed that Adrian Chase (Josh Segarra) was really living a double life as his comic book counterpart Vigilante, some questioned were Chase's villainous motivation had come from.
According to Segarra, hints of the connection between the two identities were actually pretty apparent in the show, starting with Chase's very first scene.
"The first time you meet Chase, he comes into the mayor's office and it's business." Segarra explains exclusively to ComicBook.com. "He says 'We've actually met a few years ago, you tried to pick up my girlfriend,' and Oliver says 'Those were different times. She definitely left with the better man that night,' and Chase says 'Actually, she went home with you', and we laugh about it. Oliver tries to apologize and Chase goes, 'That's okay, I don't hold grudges.' You go back to watch that now and you're like 'Not only has this dude been holding a grudge, he's designing a grudge piece by piece, and it all started a long time ago.'"
Of course, Chase's hatred of Oliver stems far beyond that chance encounter, as Chase's father was allegedly murdered by Oliver - then known as 'The Hood' - as part of Oliver's list four years prior. Segarra held on to that duality throughout his performance in earlier episodes.
"At all times, I was thinking about who this guy is on the inside, who this guy is behind that mask when see him in. Who Prometheus is, is who he gets to be unhinged. He's hiding; he can be monstrous, and he needs to be that way so that when you see him in his Armani, he can be business. He can be the mind."
While Segarra initially was in the dark about which villain he was actually playing, he quickly learned to embrace the secretive nature of Prometheus.
"I came in from the very beginning, knowing that at some point we were going to know who this man was." Segarra explains. "So I knew that I could introduce pieces of him along the way. I want to make sure that along the way, when it finally happens, you can look back and say 'Oh, I didn't see that color then, but holy cow, now I see it this way.' I didn't want to play a bad guy, quote-unquote. I wanted to play a human that felt very strongly about certain things and had a very clear intention. It aids in you designing who this person is. It aids in you introducing him because you go 'okay, now I'm going to show you this, and now I'm going to let you in on this.'"
Now that Prometheus has officially been unmasked, there's no telling what additional elements of the character will be revealed in upcoming episodes - particularly tonight's episode, 'Checkmate.'
Arrow airs Wednesdays at 8 p.m. ET on The CW.