W. D. Gaster vs. The Backrooms (ft. littleflecks and SimplyRazzy). Undertale Rap Battles! @GamingPlush64
W. D. Gaster vs. The Backrooms (ft. littleflecks and SimplyRazzy). Undertale Rap Battles!  @GamingPlush64
Uploaded July 2022 | Updated September 2026, 1 week ago
Undertale is notorious for falling into terrirory unknown, but these two tales take it to a whole new level... literally. W. D. Gaster faces off against The Backrooms in a rap battle (somehow). Who will rise? And who will sink to greater depths? Watch to find out!

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w d gaster vs the backrooms kane pixels

SimplyRazzy as W. D. Gaster
littleflecks as The Backrooms

Additional Art by Mancha (Uberocity)
Thumbnail assistance from Commander Jacob

Mixing / Mastering help from Freshy Kanal
Produced by 2Deep
Additional instrumentation by GamingPlush64

Profile picture by dreamcatcher-faux on Tumblr

w. d. gaster was the royal scientist before alphys, responsible for creating the core. gaster's followers relay various explanations as to what happened to gaster. one iteration says that he "fell into his creation," another says that "his experiments went wrong," and the last one says he "shattered across time and space." characters such as the river person and gaster's followers hint at his existence. similar to sans and papyrus, he speaks in a typeface different from the other characters, and is rumored to be named after the "wingdings" and "aster" typefaces.

the backrooms is an urban legend and creepypasta describing an endless maze of randomly generated office rooms and other environments. it is characterized by the smell of wet carpet, walls with a monochromatic tone of yellow, and buzzing fluorescent lights. internet users have expanded upon this concept by creating different "levels" of the backrooms and "entities" which inhabit them. the original version came from a two-paragraph 4chan comment on a post asking for "unsettling images", where an anonymous user invented a story based on one of the photos.
the backrooms drew comparisons to various other horror trends and media, including the photography of liminal spaces, the scp foundation collaborative fiction project, and the six-hour-long album series everywhere at the end of time. since its original creation, the backrooms has been expanded into various other forms of media and internet culture, including video games, collaborative fiction wikis, and youtube videos.

​Reuploading under any circumstance is not allowed, whether just posting audio, or just posting the video on your channel. I. Do. Not. Care. If. You. "Credit". Me. Saying I made it does not mean you can steal my years worth of work for no good reason. There is no good reason. None. It's pathetic and low.

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W. D. Gaster vs. The Backrooms (ft. littleflecks and SimplyRazzy). Undertale Rap Battles!

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