What Do The Soul Colors Mean Undertale

the red soul

(undertale spoilers)

each fallen human has a specifically coloured soul associated with them. these colours can be seen on the coffins in new home, asgore's soul containers, and the photoshop flowey boss battle. little is known about these souls, but what can be inferred is that each soul colour represents a unique trait. accessing this information requires multiple rounds of "ball game" in the snowdin forest. if the game is completed fast enough and the red flag is obtained, the following message appears.

however, red soul's trait is never mentioned. or is it?

determination is not a trait

before exploring the red soul's trait, it's time to explain why determination is not the red soul's trait. while it is a popular choice, it ultimately does not work for a few reasons. unlike the other traits, every human soul has determination.

rather than being a trait, determination is more akin to willpower or resolve. it's a power that gives human souls "the strength to persist after death." furthermore,this determination is extracted from the six human souls and injected into a golden flower, bringing flowey to life and giving him the power to control the underground's timeline. this same power is what givesthe humans the power to save and load.

unlike all the other traits, determination is inherently inside all humans. furthermore, "determination" is never mentioned in the ball game. it's also never specifically linked with the red soul nor is it ever written in red text. the word "determination" is only written in white or yellow.

there is nothing that suggests determination is an exclusive trait to the red soul. it is merely a component in all the coloured human souls.

» read more: determination is yellow

the ball game

the different soul colours each represent their own positive traits according to "ball game." the first time the red flag is achieved, the following message appears.

these are the positive traits of all the souls besides the red soul. when the ball game is won a second time in the conditions for the red flag, a new message appears.

it's important to note that the ball game can only be played as long as snowdin is not cleared of monsters. if genocide is successful in snowdin, then the snowball will be gone, rendering the ball game useless. this is the only time the ball game cannot be played. in the neutral and pacifist routes, the game can be played even after reaching snowdin or after defeating papyrus.

the mirrors

from the red flag, the phrase "be yourself" is important. the idea of "being yourself" is seen repeatedly throughout the game, so long as the genocide route is not in motion. if frisk is still on the neutral route, frisk can look into the mirror in toriel's home, and the following is said:

in new home, frisk can look into a second mirror and see the following:

this text appears in every route, except the genocide route. whether this is a reflection of frisk is up to interpretation.

in a pacifist route, after defeating asriel, frisk can look into the mirror in home once more to see this:

one of the most important elements of the pacifist route is the reveal of the protagonist's true name, frisk. it highlights how frisk's identity, or even their true self, is only revealed at the end of a pacifist route.

in contrast, the genocide route makes it clear that frisk is not themself from the start.

the red soul's trait: being yourself

ultimately, the ball game holds the most important clue. the statement seems rather vague, until the one-word limitation is removed and the trait is seen as a phrase.

"being yourself" is seen in two ways in the context of undertale. the first is more obvious, with the phrase referring to how frisk is only themself in the neutral route and pacifist route. once the genocide route is in motion, frisk is no longer in predominant control – chara is. interestingly enough, when chara is in control during the genocide route and the snowdin forest is cleared, the ball game is unavailable, perhaps highlighting the fact that frisk is no longer truly themself.

the second way the virtue of "being yourself" is used in game is by its definition. "being oneself" means to be genuine, honest, or true to one's character. along with determination, it is what allows frisk to keep going, especially in the pacifist route. sans alludes to this when he judges frisk in the last corridor.

"so as long as you do what's in your heart" can be seen as another way to say "be true to yourself." there is another reference to this trait in sans' judgment should frisk have killed any monster.

while subtle, sans stresses the importance of being true to "yourself," even in the face of committing a terrible crime.

"being yourself" may seem synonymous with integrity, but there is a difference. integrity is defined as "the quality of being honest and having strong moral principles." while both are a quality of being honest, there is a difference to what that honesty is towards. those with integrity are righteous, fair, and of good character. however, integrity is not needed to be yourself. being yourself is to stay true to who you are, regardless of what that may be. perhaps a word for this could be "individuality," "nonconformity," or "sincerity."

conclusion

while the other soul virtues are clearly defined by their colour coded trait, the red soul remains much more ambiguous. perhaps this is because frisk, chara, and the player persist as such different individuals despite being intrinsically linked, therefore the common trait between them can only be just that: their individual "true" self.