Multiverse

The Fnaf Verse is the collective term for all parallel dimensions and realities in existence. Although most dimensions are just portions of reality within a single universe, some parallels dimensions are just parallel realities that coexist in this vast collection of universes. The Fnaf Verse is believed to be explained by the eternal inflation system, however, the exact nature of its existence is unknown to its inhabitants.

Once the FnafVersal War came to an end, the individual known as Unknown chose a collection of realities that followed their same baseline and isolated them from the rest of the Multiverse. This collection was dubbed the Fnaf Verse and was assigned to the Unrow Temporal Service for protection. The UTS's secret work was to wipe and delete the timelines that branched off either by time travel or unscripted decisions by individuals who lived in their Universe that could cause the birth of an evil version of Animatronics which could lead to a new FnafVersal War.

FnafVersal War
Eons ago, Unknown in the 21st Century discovered the Fnaf Verse as other variants had also made the discovery. Making contact with each other, the variants made peace until other variants, had the idea to conquer other universes. This eventually led into the FnafVersal War where each variant fought each other for dominance. However, Unknown came upon contact with a creature, taming and weaponizing the creature to end the war, which led to the subsequent creation of the Unrow Temporal Service.