Gaster is a mysterious character connected with Undertale, released in 2015, and fan communities often represent him with distorted, hard-to-understand speech. Because the character is secretive and linked to glitches, Gaster voice effects became common in fan animations, meme edits and lore videos across YouTube, TikTok and soundboards. The appeal comes from how quickly the processed voice suggests hidden knowledge, corrupted data and an unsettling presence, even in very short clips.