It first appeared in EarthBound Halloween Hack, also made by Toby Fox. MEGALOVANIA actually doesn't come from UNDERTALE, however.
This mod's charting comes from Friday Night Funkin's week 7 Update.Sans never activates his glowing eye in UNDERTALE while winking, despite Sans's poses in this mod.It is based off of Sans' iconic flashing eye during his fight in UNDERTALE. He also gains a flashing eye in his Left and Right poses that switches between Cyan (the color of the Patience SOUL) and Yellow (The color of the Justice SOUL).
Sans is a skeleton that wears an unzipped blue hoodie over a white shirt, black shorts with white lining, and pink slippers.
