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"No, the sacrifice isn't Thawne. It never was. The real sacrifice is..."
Iris West-Allen[src]

"Negative, Part One" is the nineteenth episode of the eighth season of The Flash, and the one-hundred-seventieth episode overall. It aired on June 22, 2022. It acts as the first half of a two-part episode.



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  • There's apparently no Negative Nora or similar loved one for the Negative Speed Force as its avatar.
  • Meena Dhawan gets her sleek, dark and silver speedster outfit in this episode, along with her super-heroine name, Fast Track, as christened to her by Barry.
  • It's revealed that the Negative Still Force took a convoluted plan to restore the Reverse-Flash as the avatar of the Negative Speed Force.
    • The original Thawne was cut off from his own Force, while the Time Remnant meant to replace him altered his destiny out of love by using the BLOC on Meena instead.
  • The 2049 Jay Garrick mentions his Barry is off world dealing with the Chronarch; who was a threat Abra Kadabra mentioned.
  • The 2049 Iris still has her natural hair color, despite her previous self from Nora's childhood memory having grey hair in her 40s. Suggesting Iris either went premature grey from grief over Barry dying in Crisis and worrying about Nora being a speedster, or this future Iris just dyes her hair or ages slower thanks to exposure to the speed force.
  • The way the good Eobard turns into his evil counterpart is similar to the Doctor Who episode Planet of the Ood. The vitcims of such transformation hold their heads in pain and tear the skin off their heads in the process.
    • Moreover, this is a direct reference from the cover of "Running Scared", where Eobard rips Barry's body apart. Alternatively, Eobard's murder by his other self disguised as Harrison Wells mirrors the latter's death at the hands of Eobard in "Tricksters".