De comentários feitos por Wentorth Miller para Buzzfeed parece que ele foi, no mínimo, instrumental em recomendar Dominic Purcell:
Miller: During my first episode, in a conversation with [DC Entertainment’s Chief Creative Officer] Geoff Johns, he said, “We’re trying to cast this Heat Wave character. He’s this hothead, aggressive, unpredictable, force of nature. Are there any actors you can think of?” I said. “Dominic Purcell.” I was 90% serious, 10% joking, because I didn’t think they could pull it off or that they would even be interested in such a pairing — not knowing they were huge Prison Break fans. They must have made the call that afternoon.
Purcell: They did.
Buzzfeed: What did they say?
Purcell: Wentworth dropped me an email and asked if I would be interested and I said, “Fuck yeah!” To work with Wentworth again? Yes. I was just excited to see Wentworth. It wasn’t about The Flash; it was about reconnecting with him and having a blast. Now that I’m on the show, I’m very thankful that the show is the success that it is. I’m humbled by it, I appreciate it, I love the cast, and it allows us to be operatic. As actors, that’s all you ever really want to do: You want to go big!