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The Flash Season 9 premiered with a surprise reveal: Caitlin Snow is no longer Caitlin or Killer Frost

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The new entity is called "Snow" and is a third persona

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Caitlin apparently knew this would happen during the experiment to bring her back to life

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The plan was to use a device on Snow to bring back Caitlin and Killer Frost

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This scenario is similar to the infamous Star Trek: Voyager episode "Tuvix"

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"Tuvix" is a moral quandary episode that has sparked debate among fans for decades

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In "Tuvix", Captain Janeway separated a combined entity into two separate individuals

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In The Flash's "Hear No Evil," Snow's fate is debated by Team Flash

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Ultimately, Snow's wish to live as a separate individual is respected, and the device is destroyed

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Madison Beer spills all in debut memoir ‘The Half of It’