Earth-15 is one of the many universes in the multiverse. For unspecified reasons, it is a dead Earth.


At some point, this universe became a dead Earth.

In early 2018, Cisco Ramon vibed all of Neil Borman/Fallout's nuclear radiation to this Earth.[1]

A couple months later when Team Flash was dealing with the threat of a nuclear bomb exploding in Central City, Cisco suggested breaching the nuke to to Earth-15 before it detonated. However, because they'd been forced to operate in Flashtime to stop the nuke, this proved impossible as Cisco was ill-equipped to open breaches while moving at such high speeds.[2]

Over a year later when Team Flash needed to stop a virus made from the meta-human cure, Barry Allen suggested taking the virus to Earth-15.[3]


The Flash

Season 4

Season 5

Behind the scenes

  • In the DC Comics Earth-15 is the universe where many protege heroes have assumed the roles of or replaced their senior mentors. It was destroyed by Superman-Prime during Infinite Crisis.


  1. "The Trial of The Flash"
  2. "Enter Flashtime"
  3. "The Girl With The Red Lightning"

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