Watch Gaster Theme Videos

Undertale - Gaster's Theme

What If Gaster's Theme Was a Full Song?

Everything About Gaster's Motif in the DELTARUNE Soundtrack - A Musical Mythbusting Odyssey

Undertale - Fun 65 at Snowdin (Sound Test) Gaster's Theme

Coolio - Gangsta's Paradise (feat. L.V.) [Official Music Video]

The Man Who Got Hands - DELTARUNE UST (Fan-Made W.D. Gaster Boss Theme)

Undertale - Gaster's Theme 【Intense Symphonic Metal Cover】

Deltarune - Boltzmann Brain (W.D. Gaster Theme)

Heaven Says animation || Undertale / Deltarune Gaster narrator theory || tt: claud1aw

Dark, Darker, Yet Darker (Gaster theme remix) extended

[Undertale Remix] SharaX - Dark Darker Yet Darker

UNDERTALE - Gaster's theme [ 8th Anniversary ]

HIM - Gaster Battle Theme (Deltarune UST)

Glitchtale OST - Vantablack [Gaster's Theme]

Undertale OST - Gaster's Theme?

[Undertale] ENTRY NUMBER SEVENTEEN (W. D. Gaster battle theme)

Dark, Darker, Yet Darker (Remix of Gaster's Theme)

[Undertale] Gaster's Theme Remix - W. D. Gaster's Megalovania (amella Remix)

Undertale - Gaster's Theme Remix [Kamex]