Earth-15

Earth-15
Information
Multiverse	Original multiverse
Known planet(s)	Earth

"Uh...Earth-15! Earth-15 is a dead Earth. Breach it there, now!"

—Harry Wells telling Cisco Ramon to breach the excess radiation from Fallout to Earth-15^[src]

Earth-15 was one of the many universes in the original multiverse. For unspecified reasons in 1986, its Earth was destroyed and considered a "dead Earth".

History

A dead world

In 1986, Earth was destroyed and became a wasteland.

Earth-1's waste disposal

In early 2018, Cisco Ramon vibed all of Fallout's nuclear radiation to this Earth.

A couple of months later, Cisco suggested breaching a nuclear bomb threatening to explode in Central City to Earth-15 before it detonated. However, because Team Flash was 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.

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.

Anti-Monitor Crisis

Earth-15 was depicted on a map shown to Barry Allen of Earth-1 by Jay Garrick of Earth-3.

Earth-15 on the multiverse map.

On December 10, 2019 during the Anti-Monitor Crisis, the universe was destroyed by the antimatter wave along with the rest of the multiverse. It is unknown if a identical universe or a completely new universe with different constants was made in it's place but it is a theory that cannot be ruled out.

Known locations

• Earth (planet; uninhabitable)

Appearances

The Flash

Season 4

• "The Trial of The Flash" (mentioned)
• "Enter Flashtime" (indirectly mentioned)

Season 5

• "The Girl With The Red Lightning" (mentioned)

Season 6

• "A Flash of the Lightning" (on a map)

Behind the scenes

• In the DC Comics, Earth-15 is the universe where many protégé heroes have assumed the roles of or replaced their senior mentors. It was destroyed by Superman-Prime during Infinite Crisis.
  • During Pre-Crisis, Earth-Fifteen was the home universe of stone giants. It first appeared in Justice League of America #15. 
  • The destruction of the Earth of this universe in 1986 may be a reference to the Chernobyl nuclear disaster, which in real life occurred on April 26, 1986.