The title of this article is official, but it comes from a non-English source. If an official name from an English source is found that is not from the English Super Mario Bros. Encyclopedia, the article should be moved to its appropriate title.
Upon reaching a wall that blocks Mario from proceeding in the level on ground and in the air, Isshī gives him another of the hypothetical Super Mario Bros. 5's power-ups, which transforms him into Mogura Mario to let him proceed underground (due to the absence of Warp Pipes). In this form, Mario wears a Monty Mole costume and can dig through the ground.