The 40-year-old actor said he has been comic book fan since childhood and would give his best shot to the character, reported Entertainment Tonight.
"I'm glad everybody's happy. I'm just gonna put my head down and just really show up as prepared as any supervillain ever has.
"Growing up an avid comic book fan, and then there were a lot of superhero roles, and supervillain roles, that came my way that I said no to, or wasn't allowed to do, because of other commitments. It's just really exciting to think that this is the one."
The character has a grudge against Green Arrow but his original enemy was the Teen Titans.