2:15 Combat Ready Error404 Sans Theme (Good Audio) 3:58 COMBAT READY - Extreme Music 3:02 Undertale AU: Error404 Sans Fight Theme - Coded Strike (Fanmade) 2:10 alpha Legends: B.U.T.T.E.R.F.404 Survival Battle by alpha-player 3:23 Error404!Sans vs KingOfMultiverse!Sans (Animation) 4:08 Unrelieved - Error404 Sans [AlphaTale] (Original) 5:51 Error 404 Sans Theme. ROBLOX Sans Multiverse