Liam Hall who recently starred in another DC property, Lucifer, has been cast in the role of Joe Wilson, the son of Slade Wilson AKA Deathstroke.
He will be first seen in a two episode arc, which focuses mainly on Deathstroke, and will differ slightly from his comic book origins. This version will have him join A.S.I.S. and will be stuck in a Kasnian prison under the alias, Kane Wolfman. There are many possibilities for how this new character will figure into the Arrowverse, but only time will tell, as the season 5 finale left many doors open.
Arrow returns to The CW on October 12, 2017.