After debuting as Barry Allen in the middle of Arrow Season 2, Grant Gustin led The Flash for nine seasons, with his tenure as the Scarlet Speedster coming to an end on May 24, 2023. Nearly two and a half years later, Gustin admitted that The CW series’ final episode was not the sendoff for the show he’d hoped it’d be. Despite that, though, there was one silver lining that came with how filming “A New World, Part Four” worked out.
Grant Gustin recalled his experience filming The Flash series finale while sitting in on a SpaceCon panel (via X user @SnatchingTasha), first starting off with how the original plans for the episode needed to be changed after he got sick. As the actor explained:
