Wentworth Miller has been playing the character since he debuted in the first season of The Flash, where he would often recur alongside Prison Break alum/brother Dominic Purcell (Mick Rory aka Heat Wave) before the duo would become series regulars in the first season of DC’s Legends of Tomorrow. While Purcell would remain a series regular to this day on Legends of Tomorrow, Miller would exit as a series regular at the end of the first season, but came to a new arrangement with Greg Berlanti, which led to him recurring on The Flash as well as Legends of Tomorrow as Leonard Snart.
On his Instagram, Wentworth Miller said:
Currently shooting some of my final episodes as ‘Captain Cold/Leonard Snart’ on the CW’s Legends of Tomorrow and The Flash. Grateful — now and in advance — to a pair of talented casts and hardworking crews … Thank you. … I”ve had a tremendous time playing this character. … It’s been an opportunity, an education and a f-cking blast.
Wentworth Miller’s exit comes after it was revealed that Victor Garber would be exiting Legends of Tomorrow as Dr. Martin Stein as he’s leaving the show to perform on Broadway.