Yeah, all that angsty stuff where he remembers every timeline is…well, inaccurate. Non-True Resets seem to leave echoes among everyone who’s met Frisk, but Sans’ knowledge of timelines means he can take these echoes at more than face value. And he’s incredibly perceptive and can even usually get the count of how many times you’ve died based off of your expression, although at the higher counts he starts getting it wrong and gives up.
It’s interesting to note that another character, who actually has no knowledge of resets or anomalies to work off of, can do this to an extent.
She sees Frisk’s facial expression after they’ve killed her and reset, and zaps them on the spot.
It’s worth noting that people who are able to accurately read others’ facial expressions (particularly with the pinpoint accuracy these two do) often are highly empathetic individuals.
There’s an interesting clue to the narrator and their state of mind when you check the bag of dog food in the lab.
You see, unlike the dummy and tree, it’s affected by kill count, not LOVE.
If you kill no one…
The narrator becomes optimistic. They don’t want you to kill. The bag is “half-full”.
If you kill even one person (even a tiny whimsun, who won’t increase your love to even two)
…the narrator becomes pessimistic. The bag is now “half empty”. Their state of mind is directly changed by you killing even one person.
But if you kill Doggo, and your kill count is 21+….
The dog bag becomes funny. This is directly affected by killing Doggo and killing more than 20 people. The narrator doesn’t find his death funny before 20 kills. Something has changed in them.
Now, why is that? What kind of narrator becomes affected by you killing things, to the point where they become pessimistic if you even kill once? What kind of narrator becomes sadistic if you kill so many people?
One that is with you. One that shares your EXP and LOVE. One who becomes distanced as you distance yourself, and violent as you become violent yourself.
One who is looking to you for guidance.
One who only ever refers to themselves as Chara. One who only ever refers to “you” as Frisk.
Chara is the narrator, and their view on the world is directly changed by how much you kill.
If you kill no one, they’re optimistic. They don’t want you to kill.
If you kill even once, they become pessimistic.
If you kill over 20 people then they can be sadistic, even on a non-genocide route.
But they do not find Doggo’s death funny unless you kill more than 20 people (which is more than the equivalent of an entire area’s worth of monsters). They did not find it funny before the kills corrupted them, or they would always find his death funny, even without the kills.
Chara’s Level of Violence and Execution Points start at 1 and 0.
I hope it doesn’t seem like I’m blaming GoatDad for this, because I’m certainly not but seriously stop appointing emotionally troubled eight year olds to critical diplomatic positions Asgore