The Underground's Final Hero

by IblisVoid

An alternate ending to Undertale. To get this ending one would need to complete one Genocide run and a few pacifist runs before getting this phone call from Sans. Going as far back as the 1st human's descent into the underground, this story is very spoiler heavy and contains themes of suicide and some swearing and ideally, would be the way to save a timeline from a genocide run.

3. There's no point in telling you

Sans closes his eyes and shakes his head at Frisk's response.

*Thats wrong and you know it.

*After all this time, all these resets, you know what I think?

*I think you're running from something. You're not satisfied with the ending that everyone else likes and keep playing this demented game.

*Or you seriously don't have ANYTHING better to do.

Frisk tells Sans about the photo of everyone you found in his Lab. He blinks curiously and then reaches into his jacket revealing the photo. It was a group shot of all the monsters Frisk had become friends with.

*A picture? How did you know I had-

Sans takes another look at the picture, when he tilts it slightly, it shows a different image...

*Its a picture of all of us...but whats with these red crosses? Is this some kind of joke?

...

...

Frisk, what are you trying to say to me right now!? Is the person in this picture you!? The REAL you!?

- Yes

- No