So in undertale if you play the genaside run you get to fight one of the most hardest boss in the game sans and in one of his attacks he has a blue right eye that changes your gravity so why dose he have it well I have two theories
Theorie one he got it from his father in his right eye in birth but what about papyrus dose he have one maby but that's for a nother time
Theorie two j. The story were you get to go in the true lab of alphys which is relly gasters one of the notes said *i have injected determination into them*that could be it and sans never showed it before so many that's the result of it and that also leads to a nother two theories I have but like j said that U.S. For a nother time
