The CW has announced another key addition to Arrow Season 3.

With Devon Aoki on board as Katana, a martial arts expert we'll meet in flashbacks to Hong Kong, the network has now confirmed that Karl Yune will also recur on the drama this fall.

The actor (Real Steel, Speed Racer, Memoirs of a Geisha) will portray the husband of Aoki’s character, Maseo Yamashiro.

Serving as Oliver’s handler, mentor and friend, he’ll also play a major role in molding Oliver into the Arrow.

Arrow Seaosn 3 premieres on October 8 at 8/7c. And remember: you can always watch Arrow online in order to catch up.

Matt Richenthal is the Editor in Chief of TV Fanatic. Follow him on Twitter and on Google+.