This...not really story came when I was musing over how I believed the Judge worked. It was a theory or idea I stumbled across a few times where Sans is the Judge. It evolved into a sort of analysis and a complicated explanation of how I see the Undertale universes (and possibly other universes).
Enjoy~
According to the multiverse theory, anything and everything is possible.
As such, that means there are universes like this:
Universes where they truly do have fabrics of space and time. Where anything and everything is its own string.
And I mean, everything is its own little string.
Not even that.
They are but threads, weaving and flowing around each other in these universes. These universes have countless threads. And yet, there is only one that is Them.
They are not the judge. They simply weave and intertwine with those that are able to become Their Judges.
Only one being at a time can be Their judge.
But Their thread is powerful. Thick and suffocating. Only certain beings can become one of Their Judge.
Each being is, at their core, a single thread. They attract and intertwine with the other threads of their reality to 'mature'. And these twists are caused by several things.
The parents, guardians, creators, any of the sort of a new being. They subconsciously call upon threads to help make the essence of this new life.
A child would have the thread of patience flow towards them as their father may teach it to them. But not all threads stay.
Some never truly arrive. They dance, just out of reach, the conditions not being quite right enough to have the thread weave its way to become one with this being.
There may be threads that are simply worn away. Threads that are not compatible with the newer ones taking their places. They are worn away, forgotten. Threads like memories that are decayed by threads of time. Threads of morality chopped apart by threads of bloodlust.
Some beings are only interwoven with Them due to their surroundings: the threads around them, the threads making them, all creating a chaotic current that ends with Them crashing and tangling with those of one who shouldn't be worthy.
But this is a rare case.
Most of the time, it is the calm threads and strings that make the flows of Everything nudge Them to the being.
The smooth morals, soft personality traits, fluffed loving ways that all slowly wear away the more jagged threads of a beings string.
And the currents are calm, as They take their new place as part of this beings string.
The powers and other threads that involve Them are taxing. Only some beings can withstand it.
None are chosen. All make their own path. And it seems to be common among the multiverse for a very certain being keeps gaining the necessary threads.
They have their own essence. Their own ability to communicate.
They, in Their natural ways, never speak. They simply convey through instincts and gut feelings.
But the threads of time and experience have let Them gain threads of knowledge. Some of Their Judges are better at handling the threads of responsibility when given a direct answer.
So that is what They do with the one known as Sans.
I may continue this if my imagination flies off again to build off this, but I doubt it XD
I hope you enjoyed this little drabble! ~O.L.W.