VIDEO : Dolph Lundgren Joins 'Arrow' Cast

Action film legend Dolph Lundgren makes his "Arrow" debut on Wednesday night as Konstantin Kovar, and when he was first cast on the show, producers realized they needed to keep him around longer than was originally planned. "We rethought some of the stories a little bit once we knew we had him, once we knew he was available to us for this character," "Arrow" Executive Producer Wendy Mericle previously told Access Hollywood. He first appears in Episode 6 and I will say, like I watched his dailies and then we actually immediately made a change to his deal," Marc said.