Warning: Spoilers for The Flash season 8, episode 20
Without mentioning any character in particular, The Flash season 8 finale laid the groundwork for a new threat for Central City to face in the days ahead. The second Arrowverse series has already been renewed for season 9, which means, of course, that Barry Allen’s battles as the Scarlet Speedster aren’t over yet. Presumably in early 2023, Team Flash will be back for at least one more season of Arrowverse adventures.
According to showrunner Eric Wallace, The Flash season 8 was filmed at a time when it was unclear if the Arrowverse series would continue. That explains why The Flash picked Tom Cavanagh's Eobard Thawne to be the season’s final villain. Several episodes after having his scheme thwarted by Barry in The Flash’s “Armageddon” crossover, Reverse-Flash got a chance to re-enter the picture thanks to the help of the Negative Forces. With the massive power boost he received, Thawne was stronger than ever. But when Barry received a similar upgrade from the Positive Forces, the odds were tipped in the Flash’s favor. Now, it seems that Thawne is finally gone for good.
Related: Who Is Meena Dhawan? The Flash's New Speedster Explained
The final episode of the season ended the battle with Reverse-Flash and his time as the Negative Speed Force avatar. However, the season didn’t end without the show teasing a potential replacement for the Arrowverse's Reverse-Flash. The Flash season 8, episode 20, titled “Negative, Part Two”, delivered an ominous post-credits scene that paved the way for one DC Comics villain the show hasn’t been used yet to finally come crashing into the Arrowverse. Here’s who Cobalt Blue is, what the episode’s tease means, and what could be expected from
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