The Demon Inside of Me (Grillby X Reader)

The Demon Inside of Me (Grillby X Reader)

45.6K Reads 2.4K Votes 49 Part Story
Rice By bananahfart Completed

A long time ago, monsters and humans lived peacefully. Then, war broke out. 
    
    The monsters were forced underground, and the humans were left above.
    
    A killing machine was created, to destroy all the monsters in the underground.
    
    This is her story.
    
     Asgore is the prince, who lives in the palace with his father (Nazur) - who is on the edge of death - and his wife (Toriel) and son, Asriel. Toriel and Asgore are about 20. Gaster and Grillby are buddies around 19. Sans and Papyrus have no set age, they're experiments. If they did, they would be 17 or 18.
    Reader-chan is 18.

I read the authors note and was all like "awe yeah Thu  is gonna be such an amazing story!" And then I read this and I went o-o XD
Who are San and Papyrus expirement of? If gaster is 19 and sans and pap are 17-18 were they created by a 1 year old gaster?
(casually scrolling through Undertale fanfiction)
                              (Sees this title)
                              (quickly clicks it and goes to get popcorn)
                              This is going to be great~