W.D. Gaster AU themes
3:18
W.D. Gaster AU themes
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YouTubeIzstone333
[Underverse] X-Gaster Theme [WD Gaster] [Fanmade] [ONE HOUR EXTENSION]
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[Underverse] X-Gaster Theme [WD Gaster] [Fanmade] [ONE HOUR EXTENSION]
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YouTubeFrostFM
[Underverse] X-Gaster Theme [WD Gaster] [Fanmade]
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[Underverse] X-Gaster Theme [WD Gaster] [Fanmade]
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YouTubeFrostFM
Undertale all boss themes (and others)
42:24
Undertale all boss themes (and others)
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GASTER'S Theme - Undertale / Deltarune Remix - SCOTTY RICH
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GASTER'S Theme - Undertale / Deltarune Remix - SCOTTY RICH
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YouTubeScotty Rich
HIM - Gaster Battle Theme (Deltarune UST)
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HIM - Gaster Battle Theme (Deltarune UST)
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MEGALOVANIA X Gasters Theme
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MEGALOVANIA X Gasters Theme
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YouTubeLIAbasse
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(OLD) Deltarune Chapter 7 UST - "DOOMSDAY" | Fan-made Gaster Boss Theme
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Gaster's theme in "Nyeh heh heh" ...?
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YouTubeTheLemming1337
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[V2] Deltarune - All songs with the "Gaster's Theme" leitmotif/melody
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YouTubeMediaMotifs
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Animating gaster with Plankton's voice
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YouTubeSpine_apples
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Gaster theme but its more darker (+FLP)
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YouTubeAndrew Wooden
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UNDERTALE - All possible songs with "Gaster's Theme"
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YouTubeMediaMotifs
15:12
OMEGA JEVIL | Undertale Deltarune Fangame
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YouTubeMerg
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Gaster's Theme slowed down and reversed
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Gaster's Theme (HD Samples) - Undertale
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YouTubeASmolBoy
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Undertale - Gaster's Theme
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YouTubefishfriend
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Gaster theme but is Slowed Down on 75%
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YouTubefell_chara
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Gaster's Theme (Slowed Down)
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YouTubeVourvoutsiotis
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【remix】You're Best Experiment ( undertale AU gaster's theme Omega Gaster remix Your Best Nightmare )
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YouTubeyamo
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Undertale OST - Gaster's Theme?
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YouTube★Mιγα.
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Gaster's theme in "song that might play when you fight sans"
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YouTubeTheLemming1337
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What If Gaster's Theme Was a Full Song?
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YouTubeEdgy Truck
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PIECES OF GASTER vol. 1 | All Gaster Secrets Theories Evidence Explained in Undertale + Deltarune
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YouTube2 Left Thumbs
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[Undertale] Gaster's Finale (amella Remix) - Animation [FULL VERSION]
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YouTubeamella
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Undertale - Gaster Theme + Megalovania Remix
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YouTubeDustShift Chara
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[Undertale] Gaster's Finale (amella Remix) - Animation [W/O INTRO]
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YouTubeamella
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Undertale - Gaster & Deprived Gaster Fight (Fan-made)
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If Gaster's Theme was Horror Game Music
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Division (Gaster Sans Theme)
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YouTubeDarkronaut (Archive)
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