Mari Mario

Mari Mario (マリマリオ) is an original transformation that only appears Super Mario-kun. Mario is turned into a ball and it is used as such in different occasions. It is likely a reference to the Morph Ball from the Metroid series, which was originally known as the Maru Mari.

In chapter 1 volume 1, Luigi balls up Mario and tosses him at a Chargin' Chuck, but he tackles Mario towards a cliff.

In chapter 14 volume 2, while Mario lists all of the transformations of Super Mario Bros. 3, he mentions Mari Mario, but Luigi points out that he does not remember such transformation.

In chapter 8 volume 10, Mario is balled up by Roy and put into a flipper.

Mario would later take on an identical transformation for the majority of Mario Pinball Land.