Although it is an invisible creature, only making sounds, Shigeru MIZUKI depicted it through his imagination as a creature of round head with legs sticking out from it, with its big funny mouth opened as if it is smiling (the depiction is no more than a creation by Mizuki).
元来音だけで姿が見えない存在なのだが、その姿は水木しげるの想像によって図化されており、丸い頭部に足が生えた格好で、微笑んだような愛嬌のある口が大きく開いている（※図化された姿はあくまで水木の創作である）。