Grant Gustin Reveals Original Arrowverse Plans For The Flash Series Finale

The Flash brought the fastest man alive into the world of the Arrowverse, telling the story of one of the most iconic DC heroes of all time in live-action. For nearly a decade, The CW was the home of the Scarlet Speedster, while he also became one of the prime faces for the DC TV brand on the network.

At SpaceCon 2025 (via @SnatchingTasha on X), Barry Allen and Iris West-Allen themselves, Grant Gustin and Candice Patton, reunited for a special panel to talk about The Flash TV show. The Arrowverse lead revealed new details about shooting the final episode, explaining how “it was weird — some fans know — we had to change parts of that script.“

“This was two years into COVID, and I had not gotten it. And I got COVID a week and a half before we wrapped,“ Gustin said about getting sick during the making of The Flash final series. The DC TV veteran added: “I got positive testing, and I couldn’t come back to work.“

He went on, sharing how “they shut down for a day or two, and they reworked some of it. (He) missed three or four days of filming, at least.“One of the things that ended up getting scrapped was Gustin getting to play Savitar one more time.

The CW lead stressed that “(he) was supposed to be in the scene with the prosthetic scar and make-up, with all the bad guys, when it was Savitar in the suit. That was supposed to be (Gustin) as Savitar.“The Glee alum further elaborated: “There was other stuff that happened too, my stunt double got some stuff, we shot around him.”

As for his final day of shooting, Gustin said: “My last day of work was alone on a green screen, which also felt right — like it was kind of heartbreaking, I also spent so much time in the suit on green screen, talking to nobody!” However, for him: “It felt right, and the last shot I shot was the last shot of the series, Barry running, and pushing it in on him, just looking satisfied and that was a cool last shot to get.“

The Flash season 9 ending sees Barry, with Team Flash, going up against Eddie Thawne, now operating as Cobalt Blue, who brought back all the evil speedsters that had been featured in the series. Along with Savitar, the series finale had Zoom, Godspeed, and Reverse-Flash back one last time.

Gustin’s superhero drama became the longest-running series in the entire Arrowverse franchise and was the last Earth-Prime show for The CW. The franchise came to an official end on December 2, 2024, through the Superman & Lois final series, with their show set on an alternate Earth in the larger Arrowverse multiverse.

The Flash is available through home media release, as well as on streaming.

Release Date

2014 – 2023-00-00

Showrunner

Eric Wallace

Directors

Stefan Pleszczynski, David McWhirter, Dermott Downs, Alexandra La Roche, Ralph Hemecker, Phil Chipera, Rachel Talalay, Marcus Stokes, Chris Peppe, Danielle Panabaker, Menhaj Huda, Jesse Warn, Glen Winter, Gregory Smith, Chad Lowe, Jeffrey W. Byrd, Rob Hardy, Tom Cavanagh, Kevin Tancharoen, Millicent Shelton, Vanessa Parise, Kevin Smith, Brent Crowell, Eric Dean Seaton

Writers

Lauren Certo, Judalina Neira, Kelly Wheeler, Alison Schapker, Zack Stentz, Joe Peracchio, Julian Meiojas, Lilah Vandenburgh, Keto Shimizu, Gabe Snyder, Mike Alber, Gabrielle Stanton, Jaime Paglia, Carina Adly MacKenzie, Emily Silver, Bryan Q. Miller, Ray Utarnachitt