But in this future, Eobard is the Flash, while Barry is the Reverse Flash - and that means fighting his allies (including Iris, Kayla Compton’s Allegra, Chyler Leigh’s Alex and Javicia Leslie’s Ryan suited up). Welcome to Your Worst Nightmare, Barry AllenĪfter witnessing his arch nemesis, Eobard Thawne ( Tom Cavanagh - apparently no one wonders why he looks like Harrison Wells?), at his engagement party to Iris West ( Candice Patton), Barry tries to tell everyone how it’s supposed to be as he realizes who’s really responsible for everything going wrong in his life recently. And he really should have seen this one coming.įortunately, there’s a fix, one that leaves us wondering just how much of what happens in 2031 could still come to fruition across the Arrowverse.

But, as Barry Allen ( Grant Gustin) learns as a result of his trip to the future (2031, to be exact), not everything is at it seems. Picking up just before where “Part 3” left off, Armageddon officially arrives on The Flash in the December 7 episode.

What happened to flash