Hone

The title of this article is official, but it comes from a non-English source. If an acceptable English name is found, then the article should be moved to the new title.

“これを取れば 変身できるんだな。がいこつになる だけですけど。(If you take this, you can transform. You just turn into a skeleton, though.)”

—Isshī, Super Mario-kun

The Hone (骨, "bone") is a power-up that only appears in one chapter of Super Mario-kun volume 1 as one of the hypothetical items that would appear in a future game.

It is released by a skeletal Galoomba after being squashed. When Mario grabs it, it turns him into Skeleton Mario for three minutes.