Oliver Queen was stranded on a deserted island for five years. When the next season concludes, all five of those years will have been accounted for in each season's flashback storyline. Will the show end at that point or continue on and alter its storytelling composition? That remains to be seen; however, in the meantime we have fresh intel on what very well could be the final adversary Stephen Amell's Green Arrow will face. Via TV Line (who previously reported that season 5's big bad would be "irrepressibly charming" and someone that would just as easily "be your best friend" or "break you neck"), a more detailed description of the character has surfaced.
"The character, tentatively named “Anton Church,” is a ruthless crime lord who sets out to fill the sizable void left by Damien Darhk and H.I.V.E. The initial casting notice describes him as an “apex predator” who “cuts his way through the shadows” by taking down “the biggest threat first.” (Um, he’s looking at you, Ollie Q.) While the role is being likened to Elba’s classic Wire baddie, the breakdown also references ex-Game of Thrones actor Jason Momoa as a physical prototype."
If the show keeps with tradition, we should have the identity of next season's main villain revealed at San Diego Comic Con in July. After the Dark Archer (season one), Deathstroke (season two), Ra's al Ghul (season three) and Damien Darhk (season four), what DC Comics character do you want to see menace Star City in season 5? Surely the show has to go out with a bang if the upcoming season is truly the last hurrah.