The tenth episode of The CW's The Flash, which should be the midseason premiere, will feature Prison Break's Dominic Purcell as Heat Wave, according to The Hollywood Reporter.
This is the second Prison Break star to take a role as one of the Rogues on The Flash, following in the footsteps of Wentworth Miller, who will play Captain Cold on the series.
Both villains are, like Weather Wizard, who is seen in the series pilot, a member of Flash's rogues gallery, known collectively as The Rogues. The group is widely expected to come together throughout the course of the season. Other Rogues include Mirror Master, Captain Boomerang, Trickster and Pied Piper. Cold is often the de facto leader of the group.
“We’ll be seeing his origin and the origin of the Rogues,” said executive producer Greg Berlanti at the Television Critics Association back in July. Captain Cold will be introduced in Episode Four.