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 3:25 TS!Underswap OST - MUSCLEMEMORY + Give You Hell 1:47 Eh Eh Eh + A Sansational Battle ( Soundtrack video REMASTERED ) || Danhx 1:07 UNDERTALE: Final Showdown | TS!UNDERSWAP Sans - Criminal Catcher 1:41 UNDERTALE: Final Showdown | UNDERSWAP SANS - Change of Pace 10:45 [ClassicSwap]eh eh eh. + Sans Battle Extended [IMPROVED] 5:23 [Underswap: Thanatos] TAKIN' YOU DOWN. (Maniac's Revenge Cover) 2:51 UNDER-RUNE: Swapped Realities - It's SHOW TIME (OST) 3:22 UnderSwap : Neutral Run - Love-Struck 3:56 underverse swap sans theme 6:12 UFS: UnderSwap Sans Showcase + OP COMBOS! (Roblox Undertale Final Showdown) 4:08 TS!Underswap - Skeletal Showdown (an inky cover.) 3:31 TS!UnderSwap Papyrus Phase 2 - (AndroPhonoVania) 6:47 TS!underswap phase 1 and 2 theme 1:36 eh eh eh. / Sans Fight (Cover) - Undertale AU: Underswap UST 1:59 TS!Underswap OST - Skeletal Showdown 3:32 Skeletal Showdown | TS!UNDERSWAP With Lyrics! 2:29 Shy Sings◆Mweh heh heh!{KHTLL13 ver.}【Underswap】 2:18 (REUPLOADED) Underswap Anon Sans The The Spine Snatcher sans' fight OST 2:41 (Undertale AU) Swapswap - MEGALOMAYHEM (Cover by Charty, Original source) 0:29 CANON VS FANON SWAP!SANS 1:35 Mweh Heh Heh! + Skeletal Skirmish