Mobius and the shadow demons originated in the netherverse. Barry Allen was sent there by Mar Novu. He was eventually found by Mobius, calling himself the Anti-Monitor, and used him for his own purposes.
At some point, the Weaponers of Qward created the Anti-Matter Man as a weapon to invade the positive matter universes. However, due to the dangerous nature of the weapon, the Weaponers sealed the Anti-Matter Man within the core of a moon.
By 2018, the Anti-Matter Man escaped his confinement and began traveling through the multiverse in order to invade the other Earths.
- Anti-Matter Man (currently on Earth-27; alternate timeline)
- Mobius (currently in the microverse)
- Shadow demons (extinct)
- Barry Allen (deceased)
- Mar Novu (deceased)
- Qward (planet)
DC's Legends of Tomorrow
Crisis on Infinite Earths Giant
- Mobius implies the Netherverse exists eternally, even when the positive matter multiverse didn't exist yet.
- The Netherverse normally obliterates beings of positive matter. However, the Spectre and Paragons remained unharmed when they arrived at the Dawn of Time.