UE-18

An unknown Earth is a universe where The Monitor originate from.

Original timeline
10000 years ago, The Monitor and his wife Xneen started an exploration of the Dawn of Time. This exploration caused the death of everyone of this universe, and caused a [[Crisis on Infinite Earths (Event)|Crisis that destroyed all universe.

Current timeline

 * Due to the intervention of the Paragons, it changed this universe's history.

When Mar Novu was about to start his exploration, Lex Luthor knocked out Xneen and tried to convince Novu to not go in the temporal zone. The arrival of a Kryptonian helped to make him realize that Luthor is up to no good. Escorted by Ryan Choi, Choi manage to convince Novu to abandon his life's work for the sake of the Multiverse.

Residents

 * The Monitor
 * Xneen

Visitors

 * Ryan Choi
 * Kara Danvers
 * Lex Luthor

Trivia
It is unknown if the planet Earth exists in this universe.