Isshī

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.

“おいらは イッシー。カメの ばけものが、現れて、仲間はみんな石にされてしまったのです。(I'm Isshī. A turtle monster appeared, and all my friends were turned into stones.)”

—Isshī, Super Mario-kun

Isshī (イッシー) is a character that appears in the last chapter of Super Mario-kun Volume 1, as the guide of Super Mario Bros. 5, the hypothetical sequel Mario, Luigi, and Yoshi end up in.

When the heroes arrive in Mario 5, Mario sits on a stone, and gets yelled by it. The stone presents himself as Isshī, an inhabitant that was turned into stone, alongside his friends, by Bowser, who kidnapped the princess. Mario decides to help him and the princess, exploring this new adventure's elements, guided by Isshī, who carries Luigi and Yoshi on his back, flying to help them follow Mario when he becomes Hata Mario, and giving him power-ups and information on the new enemies.

After Mario defeats Bowser and saves the princess, it's revealed she's not Princess Peach, but Princess Watermelon.