Cupid is relatively a new character to the show. The last we saw her, Oliver Queen had captured her and turned her over to A.R.G.U.S. Deadshot actor Michael Rowe confirmed in a recent interview that the team would show up again on the 17th episode this season.
There is still no word yet why the team has been called together or if this is in fact the full lineup.
But...Not only that.....
David Ramsey has also been talking about how Diggle could well be a Green Lantern:
"Diggle can be a husband, a father, and a hero. He didn’t go through some type of tragic event. He’s a guy who grew up in the Glades, which is the hood, he did four tours, and he joined the special forces. This is a guy that I can be, that you can be, that any of the viewers can be, unlike the others who went through some tragic event and compelled them to become these characters. Diggle did through simple sheer force of will. That’s survival with regular folks. I think that’s part of the power this character has. When you cover it with a mask, he becomes something. That’s why in general we’ve been struggling with, “How do we give Diggle a mask of any sort?” Obviously, he’s out in the open, he has a wife and a child to protect, there’s a fair question about how we protect that identity and still keep him out in the field. That’s a very fair question and we’re working on it.
Now, John Stewart… Is John Diggle John Stewart? I cannot say “yes,” and cannot say, “no.”
The producers also threw in some comments:
"I’ll say this: it is top secret. David Ramsey has asked them, and they’re like, “we’re working on some stuff.” If that’s the case, it’s gonna be huge. This is the stuff they want to avoid. I think they don’t want anybody to know yet and they haven’t even told me. They have told me that they are thinking about it and they are considering it. Greg Berlanti told me that. Andrew and Marc have told me that. I haven’t spoken to Geoff Johns about it, yet. But that’s the word from people directly involved in Arrow- that they’re working on something.
Here’s the truth of it: if I knew, I would tell you I knew and I’m not at liberty to tell you that. I probably wouldn’t tell you anyway! I would at least tell you that I know. But I honestly do not know."
Could it be?