Multiverse

Multiverses are some of the most common locations where larger stories involving multiple different versions of the same character exist and interact with each other. Locations that contain universes and Voids, using inbetweens to fill in the gaps left behind by these bubbles and also act as the main locations where a being could use to interact with others. Multiverses are often seen as three spatial dimensional sets of universes with extra space between them, having two dimensions of time to explain how their timelines work.
A Multiverse seems to be random in what it contains and most have no common theme beyond the ones made as a result of the selected universes and voids within it interacting. Multiverses do have multiversal timelines that act like universe timelines but for a multiverse. A multiverse contains between 2,500 to 8,000 different voids and universes combined, although measuring amounts of inbetweens is impossible. Averaging around 1209 light years, which is similar to the thickness of the Milky Way. You might notice that these Universes and Multiverses are quite small and baby-ish when compared to the creator’s world, this is mostly due to the fact that the Undertale world is a ton denser than the creator world, and that the requirements of a Universe is much less than the universe in the creator's realm due to how we place importance on the narrative story of characters, who mostly just exist on one planet.
== The Multiverse contains ==
What a multiverse contains is not always the same, different multiverses containing different amounts of negativity or positivity can end up with differing structures and shapes. However, there seems to be a general structure of increasing positivity towards the centre, allowing for certain structures to be present in almost all multiverses. So, here are the explanations of all the different structures of a typical Multiverse, working from the centre most parts to the outermost parts. A depiction on the side will be provided, and although it doesn't match the sizes for each structure, it is quite useful to help describe what a multiverse looks like and how the structures interact.
The Doodle Island is the centre most part of any Multiverse, being quite small and usually only a couple characters often exist around this location. It is known for being the centrepiece of the doodle sphere and home to the doodle sphere's inhabitants. A small floating island that is made out of either ink or destroyed Universal remains, used as the location where all creativity bursts forwards from. It is often only a few dozen metres in diameter and is hard to notice without the high contrast from the heavily glowing positivity in all directions. This island can have differing shapes or sizes depending on the multiverses, and some multiverses even see characters changing what is on it to make themselves a home.
The Doodle Sphere, a roughly spherical structure with a hard shell to help physically keep out any beings that wish to cause harm to any of the representations of universes away. This sphere houses most of the characters that either wish to create, fix or protect universes, and it also contains thousands of small papers that each contain a representation of the universes found outside the doodle sphere. These papers are how these creator based characters are able to create universes from a remote distance, but also at the same time are an extremely easy method to destroy mass amounts of universes. Which is why a lot of protectors of universes often spend more time in the Doodle Sphere since it is the more likely place to be attacked. Doodle Spheres can range from a few hundred metres to a single light year, roughly depending on the amount of universes in that Multiverse.
The Guardian's Domain is exactly what it says, it is a region of space outside and around a Doodle Sphere where, despite the reduced amount of positivity, still has nearly no negativity. And as such is a location that a lot of guardians and protectors of the Doodle Sphere set up little universes or islands to act as their homes and safe locations for them to exist within. These are the locations that the guardians tend to be between the stories, existing and chilling until they are called upon or they need to attend to issues. This Spherical shell basically helps protect the Doodle Sphere by making the entire area around it impossible to go through without facing these protectors. This location has a diameter of about 15 light years to a hundred kilometres, though that volume has to subtract the Doodle Sphere's volume.
The Universal Absolute is one of the strangest names for a quite normal location. This is just a spherical shell around the Guardian Domain where Negativity and Positivity are both equally common. And are the locations where those 2,500 to 8,000 universes and voids mostly occupy. It is the location where most common character interactions occur, and where Guardians and Destroyers often find each other. These Universes poof into existence on the border of the Guardian's Domain and the Universal Absolute. And during their lifespan are pushed closer and closer to the next location, where they enter the territory of the destroyers and are almost always either pushed back into the Universal Absolute or are destroyed. The Universal Absolute is where the Multiverse gets most of its size from, being roughly 800 thousand light years across.
The Shattered Remains is a ring around the Universal absolute that is considered a slightly more negative location, with minimal negativity. Most morally ambiguous characters come from universes that exist within the Shattered Remains. Basically as Universes enter the Shattered Remains, they can either be left alone and continue on their way, destroyed into their remains, or pushed back out into the Universal Absolute. Mostly depending on the relations between the contents of the Universe, the Destroyers at the scene and any rules or promises made with the Guardians. The Shattered Remains mostly just contains a few universes still floating around, a lot of shattered and destroyed parts of Universes, and some places destroyers call home. This ring has a diameter of 1200 light years, 400 light years when subtracting everything smaller then it.
The Nightmare's Domain is the last location that is still inside the Multiverse, and it is quite similar to the Guardian's domain, just a lot larger. It contains hundreds of floating islands, which are made from the destroyed parts of universes slowly coming together, a few universes and some mega-floating islands which are much larger as they are islands which had all combined together. This is where most truly devoted Destroyers exist and are the location where they reign supreme. The negativity is so great that positivity is almost completely gone in these locations. This ring adds an additional 109 light years, or a total diameter for the Multiverse of 1309 light years.
The Multiversal Border or Boundary is a mostly thin spherical shell that contains the entire Multiverse. It helps keep all within one Multiverse from leaving it. And even though one might be able to see additional locations outside of a Multiversal Boundary, such as the Distant Beyond or the Further Beyond, travelling to these locations is almost impossible. This is because the Multiversal boundary is incredibly physically tough, almost impossible to rip, puncture or tear. And it costs more magic to teleport just barely outside the Muliversal border then to teleport all the way out into the Alphaverse that contains the Multiverses. The thickness of this Border is about 2 metres, and few even know what it is made from.
The Distant Beyond and The Further Beyond are both locations beyond the Multiversal Border, their size and structure is quite unknown because, except for one case, no one has easy access to going to these locations. But from simple visual information, they seem to be an abstract abomination of the normal structures of the Nightmare's Domain, where all these islands and universes all collapse into one interconnected network of tunnels and caves hundreds of kilometres across.
== Specific notable locations ==
Some Multiverses contain similar smaller structures that aren't the same as the larger locations that these smaller places are found within. These won't include common Universes or Voids that are found in many or all Multiverses, and will focus on the structures that are nearly or always present in every single Multiverse that aren't universes and are very important to the function of the multiverses.
The Anti-Void is an incredibly common structure that is found in almost all Multiverses, in some form. Whether that be through an actual Void or as an Inbetween that looks like a Void. It is the home of all Error like beings, and can house numerous destroyers and other destructive beings from time to time. It is often found around the Shattered Remains or sometimes inside the Universal Absolute.
The Anti-Storage is a not very well known but somewhat common structure within Multiverses. Believed to be similar to how the Anti-Void works but in a different method, it is able to funnel and destroy any unused and unneeded code from a Multiverse. Few Characters can enter or have access to it, and those that have entered often become monstrosities of hundreds of other characters as the code of dead characters are forced to be funnelled through the beings that enter the Anti-Storage.
The Omega Timeline is either an extremely abnormal void or an incredibly well hidden inbetween that a strange Frisk has been able to call home in almost all multiverses. They use this location to create a home for anyone who wants it, especially for those who come from destroyed or disintegrated universes. Core Frisk is the only being who has access to who gets to enter or exit this location and as such they get to choose who is allowed to run amok in this strange world and who cannot. It is most likely located somewhere in the Universal Absolute, but no one knows where.
The Void Oasis is similar to the Omega Timeline and is controlled by a similar Core Chara. This place is a bit more rambunctious and acts like a home and place to chill out for most Charas. As Charas tend to not feel too comfortable in a place like the Omega timeline and most Charas are too destructive or evil for Core Frisk to be willing to let them run around. So the Void Oasis was created as a reasonable substitute. It is most likely also located somewhere in the Universal Absolute, but no one knows where.
Nightmare's Castle is an extremely large castle, made for one truly powerful and dark Destroyer that feeds off the negativity present in the area. It is the home to most of the Destroyers as they dislike being as close as Error is to the Universes and Creators. It is located near the Multiversal Border, within Nightmare's Domain and is the reason why that location has such a name.
== Multiverse 676-2's differences ==
Multiverse 676-2 one of the most abnormal and confusing Multiverses that has been seen. Having far too few timelines then most Multiverses and is contained in such a way to cause it being cut off from almost all multiverses. And the main difference, beyond the characters and events that took place, is that it is incredibly smaller then most Multiverses due to the reduced size of the Universal Absolute, which is because of the decreased amount of universes present in that location.
Another major difference is the decreased amount of positivity and increased amount of negativity that both lead to a smaller size of structures like the Doodle Sphere and Guardian Domain, as well as an increase of the sizes of the Shattered Remains and Nightmare Domain. And, the most abnormal thing that this world has is that it contains a small portion of the Distant Beyond inside of the Multiversal border. Which is due to the incredible amount of negativity at the border being enough to form the Distant Beyond.
== Credits ==
Here are the creators of all the characters and concepts that were mentioned in the wiki, if any credits are wrong raise the issue with me please:
Alphaverse
Multiverse 676
Nightmare Castle and Nightmare
Bananachicken09
Anti-Void and Error
Doodlesphere and Ink
Omega Timeline And Core Frisk
Core Chara (This creator might not be the first creator of Core Chara, However they seem to be from a simple google search.)
Void Oasis
Category:Multiverse
Category:Locations