Nattō

Nattō (ナットー) is one of the hypothetical new enemies that Mario encounters in Super Mario-kun volume 1, in a chapter dedicated to the possibilities in a "Super Mario Bros. 5". It is a Buzzy Beetle with on its shell, making it sticky as the aforementioned food.

Mario and his friends encounters it in the underground. Mario gets stuck in the Nattō's shell. Yoshi jumps in and eats it, saving Mario.