"There's going to be some new characters, I'm sure you guys have read, that are going to be joining, some very very well known characters that have been in prior movies so I think it's going to be exciting to see," states Haynes, who plays the character Roy Harper. "I think it's going to be exciting to see who they cast as those people or if they can get some of the people from the actual movies that have played them."
Now, we know that any and all characters relating to Batman and Superman are off-limits to the show's producers for the foreseeable future, so don't expect to see Henry Cavill donning the cape for a small screen cameo. Looking beyond that, the only character with recent movie experience who could be described as better-known than Green Arrow is that of Hal Jordan, a.k.a. Green Lantern, who was portrayed by Ryan Reynolds back in the 2011 movie.
Adding some credence to the possibility is the fact that executive producer Marc Guggenheim (who happened to script Green Lantern alongside fellow Arrow producer Greg Berlanti) included a nod to Ferris Air in the season one finale of Arrow, and has previously spoken about the possibility of introducing the Hal Jordan: "[A Green Lantern appearance] is certainly something that we've talked about. As with all DC characters, we have to figure out a way for those characters to fit within our Arrow universe, but when you consider the importance that Hal Jordan plays in the Green Arrow comics, it's certainly one of those names that we've discussed a great deal. I have Ryan Reynolds' phone number around here somewhere."
Naturally it remains to be seen whether Reynolds would be interested in reprising the role for the small screen, or indeed, whether Warner Bros. would allow the show's producers to tie the series into its fledgling DC movie universe. Still, there's always the option of going with another Green Lantern such as John Stewart, Guy Gardner or even the New 52's Simon Baz.