Robert Knepper has been cast in Arrow and The Hunger Games: Mockingjay. ItÔÇÖs a good time to be Robert Knepper. It has been a great time for Robert Knepper. The former Prison Break bad guy has been cast in both Arrow and The Hunger Games: Mockingjay. Knepper, who you may remember as T-Bag in Prison Break and Samuel Sullivan in the final season of Heroes, … Continue reading Arrow: Prison Break Actor Cast as The Clock King