4:43 Glitchtale Animosity OST - W. D. Gaster fight Betty 0:35 Undertale - Gaster's Theme 6:54 Glitchtale - Ascended (#4 Ascension) EXTENDED VERSION | by amella 1:48 What If Gaster's Theme Was a Full Song? 3:48 Undertale OST - Gaster's Theme? 4:18 Dr. Gaster (Undertale Song) - [SEIZURE WARNING] - Shadrow 3:23 UNDERTALE - Gaster's theme [ 8th Anniversary ] 2:28 Dark, Darker, Yet Darker (Remix of Gaster's Theme) 3:21 [Undertale] ENTRY NUMBER SEVENTEEN (W. D. Gaster battle theme) 4:30 Entry Number 17 - Dark Darker Yet Darker 2:04 𝗘𝗖𝗟É𝗧𝗜𝗖𝗔 𝗠𝗢𝗥𝗧𝗔𝗟 ( 𝗦𝗨𝗣𝗘𝗥 𝗦𝗟𝗢𝗪𝗘𝗗 + 𝗥𝗘𝗩𝗘𝗥𝗕 ) | \"𝗪. 𝗗. 𝗚𝗮𝘀𝘁𝗲𝗿\"𝗘𝗗𝗜𝗧 3:48 W.D. Gaster (Undertale) - ELE SENTE VOCÊ | HAYATO 4:59 The Man Who Got Hands - DELTARUNE UST (Fan-Made W.D. Gaster Boss Theme) 5:05 Glitchtale OST - Vantablack [Gaster's Theme] 4:25 [Undertale Remix] SharaX - Dark Darker Yet Darker 4:00 YOUR FAULT | DELTARUNE Chapter 6 UST (Snowgrave Gaster Final Boss Theme) [666/6] 6:20 POSTMORTEM - Friday Night Fallen OST 4:10 Gaster's Waltz (☼︎☜︎✞︎⚐︎☹︎✞︎☜︎) 0:13 Rare W. D. Gaster Sightings 1:38 UTPR OST : Gaster p-1 : Darkest Hour 3:50 ECHO - W.D. GASTER 2:52 KillyKid - Gaster Theme Remix (Official audio) 7:58 [Undertale] Gaster's Finale (amella Remix) - Animation [W/O INTRO] 1:48 W.D. MUSTARD 1:25 Animated [Undertale Remix] SharaX - Dark Darker Yet Darker