Undertale - Creepy Easter egg in the Toriel boss fight

This happens if you have done both the pacifist run and genocide run and then decide to do the pacifist again.
There are a lot of easter eggs like this when meeting Papyrus and Sans later in the run as well.
*EDIT You dont have to do the entire genocide run before reseting, you only need to kill Toriel and leave the ruins.
Thanks for 200k views guys :D

[octostone]

Toriel: You look like you just saw a ghost.
Frisk: His name was Napstablook.

[Mika]

Damn....the fact this game remembers everything you did is creepy.

[Mechasolaris]

This had a real impact on me when i first played the game.

I wondered why everyone was so hyped over this game.
I bought Undertale so that i could play it myself. The flower was a bit spooky and the game had a good sense of humour. I was enjoying this little RPG. I wasn't too certain as to what i was supposed to do, other than that i wanted to avoid killing anyone as the trailer said it was possible.
Once i reached the toriel battle however, i was lost. I decided that i would experiment. I have a save point, i can do whatever i want. I decided to fight her and defeat her. When it turned out that i had actually killed her, i felt terrible and reset to my save.
I went to try again with the acting and mercy options and when the game said "You thought about telling Toriel that you saw her die" I kind of paused in disbelief. As if i wasn't spooked enough, the flower poked at me for what i had done.
This was no longer just the little indie RPG that i had assumed it to be.

[omar-]

Game: Can you show mercy without fighting or running away...?
Me: Um yeah i can press that huge button right there that says mercy.

[andrewbowers]

This game is so terrifying and sad sometimes. Flowey is scary, and when I killed Toriel because I thought I had no choice, it haunted me as though I had actually killed someone. I was miserable until I reset after fighting Omega Flowey. Omega Flowey, gosh, it's so creepy how it closes the game when you die. It really gives me the sense that he is in control. This game is so incredibly well made!

[RyTheFirecracker]

Just want to say that whenever you die to Toriel, she gasps for a spilt second. It’s just sad. That’s all.

[LeBonkJordan]

No, it happens if you kill Toriel at all. You don't even need to complete the run or have done any full playthroughs at all. When Toriel is killed, it makes a flag in the game files that does not go away, even after a true reset. It can only be removed by editing the game files.

[raindog]

SANS: hey Tori
toriel: yes?
Sans: Knock knock knock
toriel: who's there
Sans: BOO
Tori: BOO who?
sans:don't cry
toriel: *burns sans

[alephiend]

See a ghost? Ah, Napstablook, of course.

[Flygoniaks]

Correction to the description, this can actually occur if you just kill Toriel and then go back. Doing a full genocide route is not necessary to see this.

[m.a.ddragon]

If toriel accidentally kills you she looks shocked for a split second. Cause she doesn't want to kill you

[sejrefraincisa]

I love how this game gets sick of your stupidity or laziness after a while. Like in battles if you keep doing the wrong thing, after a while will start giving you little hints, then a while after that the game's like "THIS ISN'T THE SOLUTION YOU MORON!"

Or during certain puzzles the game will just give you the answers. Like after continuously failing the colored switch puzzle, it tell you, "you notice that there's a blue switch behind the top pillar". And with the snow face circle puzzle, Papyrus will literally give you the solution if you ask him multiple times.

There are even more, but I don't have time to list all of the examples I know. It's pretty funny though.

[hazerd]

My first run, I killed her on accident. I made it to Asgore without killing anything else, when the guilt finally got to me enough to make me reset. (GUILT, in a video game, what sorcery is this, where did these feels come from? Toriel's death doesn't negatively affect the rest of the run in any way, aside from preventing the pacifist ending, yet it got me to feel guilty enough to reset my playthrough at the final boss, just to beat the first boss differently.)
When I saw Toriel recognize my choice of Butterscotch, I thought it was awesome.
When I saw this dialogue, then the Flowey speech after sparing her... Undertale turned into my favorite game of all time in that instant, and I didn't even (exactly) meet my favorite character yet!

[randomguy]

I can imagine the conversation
Hey Toriel! I killed you once before so please let me through!

[magicalalphysgamer]

Here's a Easter egg...



Tori glitching out in half a millisecond after you kill her

[discordlexia]

This also happens if you kill her and then reset.

I know. It was...

*shudders*

[shmoop]

If you think about it, the way the game is programmed makes it like it's own world apart from ours. And us playing allows us to interact with it. It makes you see the characters as living beings. It's creepy and cool, it just makes me love Undertale even more.

[kotanamii]

Heh this happened to me first try. First time I killed her, then I went back. Now it's been going on like this.

[Gerdian]

Actually happens if you kill her once, I did it I killed her thinking that I had to fight

[emmanem_nem]

Imagine you just walk up to someone and casual say:

You:hey best friend!

Friend:sup dude!

You:I saw you die!