Arrow Season 4 Spoilers: Everything You Need To Know
4. Damien Darhk
Meet the new big bad of Arrow. Damien Darhk, who was mentioned in season 3 by both Ra's al Ghul and Darhk's own assistant, is now coming to Star City, and he'll be causing a whole lot of trouble for Team Arrow.
Trained by the League of Assassins he's a deadly fighter, and also possesses genius-level intellect, and an army of loyal followers behind him as well (who went with him when he left the League), known as H.I.V.E. (which stands for Hierarchy of International Vengeance and Extermination in the comics), who were responsible for killing his brother a few years back.
After the slightly-underwhelming Ra's al Ghul, Arrow needs another great big bad, and from the sounds of it at least Darhk - who'll be played by Neal McDonough - is going to be just that, described by Marc Guggenheim as being "truly malevolent."