User blog comment:BlindmelonKen/Could Arrow tie into the DC Cinematic Universe?/@comment-5516646-20130223012227/@comment-4300738-20130223013710

The show has given the Green Arrow character more time to develop and interact in the world than he would in a 100-150 minute feature film.

Oh! I have a theory.

Derek Reston in the comics is an android, so maybe in a feature DCCU he gets brought back to live with the aid of technology, making him half-human and half-android.

Not sure about Firefly though. I guess he could be considered a one-off villain that gets killed off in the DCCU like Whiplash or Iron Monger in the Iron Man films. It doesn't have to be exactly like the comics.