Countless people within the Undertale Fandom have tried to give their own two sense on how science works within the game. A lot of the way science works for Paper Sky is all taken from the game, and builds off/branches off from theories such as Zarla's or TheGreatRouge's, and countless other people. In fact, it shamelessly points out that multiple times. There was no altering. It just took chunks out really. And make no mistake, I know a lot of it isn't mine. I have a brain, surprisingly. I do intend to mention every single instance in the stories that this happens and credit them to people. So, you will hear a lot of things you have probably heard elsewhere, or stuff I have made my own that branches off from within the Undertale universe.
Souls!
This, is one such thing from the Undertale game and fandom. Toby Fox had the original, but the fandom greatly helps to sum it up and shed more light on it. Here, is a great tool to use if you too want to find out more about souls, as Toby Fox interpreted them.
Although the fandom has expanded the list of souls, the ones that are traditional and plan to stick to, unless something changes are these.
The image below can be found courtesy of this person here:
The image below can be found courtesy of this person here:
Now, the one thing that can make a soul a little more unique is if the soul of a person has more than one trait. The following is something I have developed myself. In most cases it is a telltale sign of a little more power, but in other cases, it can be a sign of weakness. In Six's case, she kept getting bits and pieces of soul traits in order to stabilize herself. It was quite a rare occurrence actually. The universes in which she existed made it so that she kept fusing and becoming one, because this way it's own version of her would survive. That meant that the dominant version would mainly act, as all of the soul bits acting as one body, for each their own survival.
Now, in order to tell if a person can have multiple soul traits and have been in possession of these from the start, one must look for Soulstuff circulating within the body. Because having two or more soul traits gives the bearer extra power, if unused for the most part, the excess soul matter is secreted in tiny soul flecks, known as Soulstuff. Soulstuff can act mainly as antibodies that target anything that threatens the body, and therefore the soul, or in pregnancy's sake, souls. One such example is River Lynn. River Lynn has written a lot about souls, and Soulstuff, usually from observing her own soul. She has a soul which contains both bravery and patience. Because she does not have eyes, the main goal for her Soulstuff is to find a way around that, and still manage to have her see. Although it's not typically seen in her day to day encounters and such, she has an excess amount of Soulstuff gathering in her eye sockets/ eyelids. When she gets excited, or feels a strong emotion in general is when the orange and cyan color shows in that area, looking like pupils. However, that is just the illusion of the mass amount of Soulstuff within the area.
Now, in order to tell if a person can have multiple soul traits and have been in possession of these from the start, one must look for Soulstuff circulating within the body. Because having two or more soul traits gives the bearer extra power, if unused for the most part, the excess soul matter is secreted in tiny soul flecks, known as Soulstuff. Soulstuff can act mainly as antibodies that target anything that threatens the body, and therefore the soul, or in pregnancy's sake, souls. One such example is River Lynn. River Lynn has written a lot about souls, and Soulstuff, usually from observing her own soul. She has a soul which contains both bravery and patience. Because she does not have eyes, the main goal for her Soulstuff is to find a way around that, and still manage to have her see. Although it's not typically seen in her day to day encounters and such, she has an excess amount of Soulstuff gathering in her eye sockets/ eyelids. When she gets excited, or feels a strong emotion in general is when the orange and cyan color shows in that area, looking like pupils. However, that is just the illusion of the mass amount of Soulstuff within the area.