Type: Null was created by Faba of the Aether Foundation to be an "Anti-UB Fighting life-form". Codenamed "Beast Killer", Type: Null was given cells taken from all known Pokémon types with the intention of giving it the ability to shift between types by holding a corresponding Memory, an ability originally inspired by the myths about Arceus found in Canalave Library. This ability led the Aether Foundation to give it the name Type: Full. Three known models of Type: Full were created, but all three rejected the RKS System and went berserk. After being subdued, the three Type: Full were given limiter helmets to lessen the effects of the RKS System's rejection and were put into permanent cryogenic stasis, and the "Beast Killer" project was deemed a failure, and their name changed to Type: Null.
Aether Foundation Worker: What is that?
Faba: That was Type: Null