Since the final few moments of Arrow's spectacular Comic-Con trailer, fans have been eagerly anticipating the first onscreen appearance of Season 3's main villain--Ra's al Ghul. An iconic character in comics, film and animation, Ra's is the leader of the infamous League of Assassins and has been a formidable foe to many DC Comics characters.

Ra's was mentioned throughout Season 2 of Arrow, but never seen. And while we'll have to wait until Season 3 gets underway before we see him in action, we now know the actor who will be embodying him--Matt Nable.

Nable is probably most well known for his role in Riddick. We'll first meet his Ra's al Ghul in episode 304 of Arrow, "The Magician." Described as proud and unforgiving, Ra's is a ruthless strategist, a master of martial arts, and a shaper of history. He carries the wisdom of the ages, and protects some of its greatest secrets.

Episode 304 will air on October 29, and also happens to be the series' 50th episode. New episodes of Arrow return on October 8, 2014 on The CW.