1:02 Canon Underswap Sans Theme 1:35 Underswap: Thysia - Mweh Heh Heh + Skeletal Skirmish (Animated Soundtrack) 1:09 UNDERTALE: Final Showdown | UNDERSWAP SANS - Another Magnificent Cascade 10:45 [ClassicSwap]eh eh eh. + Sans Battle Extended [IMPROVED] 1:41 UNDERTALE: Final Showdown | UNDERSWAP SANS - Change of Pace 1:47 Eh Eh Eh + A Sansational Battle ( Soundtrack video REMASTERED ) || Danhx 0:32 Magical Girl Sansformation ✨(ts!underswap animation) 3:06 [Underswap] Oppa Asian Style (Cover) 1:35 UNDERSWAP - eh eh eh + A Sansational Battle (Animated Soundtrack) 3:39 UNDERSWAP - Striking The Demon Down (Cover) 2:37 UNDERSWAP - When The (cover) 4:38 Starting Point of Error (Cover) - Undertale AU: Error Sans (Megalobattles: Overdrive) 2:10 Underswap - Marrowmania (Nyeh Heh Heh + Bonetrousle) 6:01 [TS!UnderSwap] Saviour of Sunnedout!!! + skeletal showdown.(Official) 3:56 underverse swap sans theme 1:02 A Sansational Battle - Underswap canon 6:17 PureDawns - Azalea's UNDERSWAP 1:01 Swapswap - sans.. (Original) 3:25 TS!Underswap OST - MUSCLEMEMORY + Give You Hell 0:29 CANON VS FANON SWAP!SANS 1:59 TS!Underswap OST - Skeletal Showdown 1:35 Mweh Heh Heh! + Skeletal Skirmish 1:43 Ts underswap ~ swapfell [ts swapfell] sans/crossbones theme 3:18 UNDERSWAP - Passive Megalovania (SHORT VERSION) 0:07 well this stinks (but underswap papyrus)