The fourth season of Arrow is starting to come together. Per the WB Press release:
ARROW NEWS: NEAL McDONOUGH JOINS THE CAST FOR
SEASON FOUR AS DAMIEN DARHK
• Neal McDonough (Band of Brothers, Justified, Captain America: The First Avenger) has joined the cast of ARROW as a series regular for season four.
• McDonough will play the DC Comics character Damien Darhk.
• Damien Darhk is a mysterious and sophisticated villain, and an adversary of the late Ra’s Al Ghul. Now the leader of his own clandestine group, this cunning foe will prove to be one of the Arrow’s greatest challenges.
Returning for its fourth season Wednesday, October 7, at 8/7c on The CW, Arrow stars Stephen Amell, Katie Cassidy, David Ramsey, Willa Holland, Emily Bett Rickards, with John Barrowman and Paul Blackthorne, special appearance by Neal McDonough. The executive producers are Greg Berlanti, Marc Guggenheim, Andrew Kreisberg, Wendy Mericle and Sarah Schechter. Produced by Bonanza Productions Inc. in association with Berlanti Productions and Warner Bros. Television, Arrow is based on the characters from DC Comics.