Extreme Underfell Sans, ULCFan Wiki

Extreme Underfell Sans looks like Underfell Sans but with a slightly more shaded face. This Sans requires 5,000 exp ( soon to be 3500 exp) on Underfell Sans Every Attack besides force has KR. Attacks KR Fell Rapid Blasters: Spawns 5 blasters in a random shape, all aiming where Sans clicks.12 HP for one blaster and 60 HP if all blasters are touching a chara team character. 12 Stamina used, 5 second cooldown. also has KR KR Extreme Fell Rush: Fires Bones behind you, traveling where you clicked. do

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Underfell [EXTREME-MODE] - E.A.S.I.E.S.T E.N.E.M.Y