With the first season of "The Flash" coming to a close, lead actor Grant Gustin has readily expressed his gratitude for the show's success. He's already penned an open letter thanking the show's cast, crew and fans, and now he's given an in-depth interview to Buzzfeed in which he reveals what the future holds for the CW's growing lineup of DC Comics programming.

Joining "Arrow" and "Flash" next season is "Legends of Tomorrow," a team-up spinoff that features characters that got their start on other CW/DC series. As Gustin revealed in the interview, some "Legends" stars will pull triple duty during the 2015-2016 TV season.

"Like, I'm on 'Flash,' but as far as a lot of those other characters are concerned, they're just on three TV shows at one time, which is really cool," said Gustin. "Wentworth [Miller, who plays Captain Cold] and Dominic [Purcell, who plays Heat Wave] are on 'Legends,' but they'll be on 'Arrow' and 'Flash,' too. It's like a revolving door for all three shows."

Crossovers with "Arrow" were commonplace during "Flash's" first season, with a number of characters -- including Felicity Smoak, Ray Palmer, Laurel Lance and the Arrow himself -- all appearing on the show. Conversely, "Flash" actors Grant Gustin, Danielle Panabaker and Carlos Valdes all appeared on "Arrow." Appearing on both shows proved to be a little taxing on the actor, as he told Buzzfeed, but he did power through the long schedules and has learned how to handle the workload better.

"When I was doing the 'Arrow' crossover for the first time, I thought, I'm going to die at some point this season," said Gustin. "But we pushed through to Christmas and that was the moment I was like, Oh good, I'm not going to die. And now I know for next season what it's going to take, I know how to pace myself, and I don't have to come out of the gate so strong. I put a lot of pressure on myself this time last year, and I'm not doing that to myself now because I trust Andrew [Kreisberg], Greg [Berlanti], Geoff [Johns], and my cast. We all do it together."

"Legends of Tomorrow" debuts in 2016.