MEDIUM actor David Cubitt is the newest addition to the ARROW cast in a major guest role!
The actor will take on the role of Mark Shaw, who will eventually become Manhunter, a man with deep connections to Diggle and Oliver.
From The Hollywood Reporter:
Who is Mark Shaw? In the DC comics, he is one of many who take on the Manhunter name. When the character makes his Starling City entrance, he will be an A.R.G.U.S. operative in Corto Maltese who crosses paths with Diggle. In comic lore, Mark has a connection to the Suicide Squad, as do Diggle and Oliver. In the past there have been nods to Manhunter on Arrow; in several episodes, a Starling City district attorney named Kate Spencer played a pivotal role in the mythology before she was killed in late season two. (One of the characters who becomes Manhunter in the comics has the same name.)
Mark Shaw will make his first appearance in episode three, though nobody knows how long he’ll be sticking around.