Two new DC Comics characters are set to appear on Arrow

Arrow is set to increase its number of DC Comics superheroes with Mister Terrific and Anarky being introduced during the next season.

Echo Kellum has been cast to portray the genius-level athlete Justice League member Alexander Calvert. Mister Terrific will work alongside Felicity Smoak as a member of Palmer Technologies' resident inventors.

Alexander Calvert is set play the mysterious villain Anarky who is an environmental crusader and anti-government terrorist.

The show returns to the CW network on Wednesday, October 7th at 8pm.