W.D. Gaster is the mysterious, largely unseen scientist from Undertale, and fans have long associated him with clocks, hidden rooms and erased history. Short ticking clips like this one circulate in fan edits, lore videos and meme soundboards, where the steady beat stands in for his unseen presence and the feeling that time is being watched. Its popularity endures because it is instantly recognisable to Undertale fans without needing dialogue, music or explanation, making it easy to reuse across fan videos and edits online.