Summary
- Grant Gustin played the Flash in the nine-season long Arrowverse series.
- Gustin is a huge fan of Superman, sparking interest in a Superman & Flash team-up.
- Despite low chances of the Flash returning, Gustin could still appear in the DCU in some capacity.
Grant Gustin starred as Barry Allen in the DC series The Flash, and there is still some hope that the actor may play a role in the upcoming DCU. Everything known about Superman suggests that the film will interact strongly with the franchise's legacy, and there have been few more significant additions to The Flash's legacy in the past decade than the CW series Gustin starred in. The series ran for 9 seasons, contributed heavily to the Arrowverse, and explored Flash’s comic book history. The series even crossed over with the DCEU, featuring an appearance by Ezra Miller as another Barry Allen.
While the DCEU and Arrowverse have both ended, nothing in superhero media is ever truly over. The canon only grows larger and larger, allowing for things like multiple versions of "Crisis on Infinite Earths" to be told on-screen. The live-action iteration used actors from throughout the years, and even 2023's The Flash saw a prominent return to the Batman role by Michael Keaton. Following the examples set in these other films and series, despite his show being finished, there is always the possibility that Grant Gustin could return to the role of The Flash in some capacity.