Kaiju Mario

Kaiju Mario (怪獣マリオ, Monster Mario) is a monster doodle of Mario created by Yoshi on a rigged version of Mario Paint that appears as the main antagonist of chapter 10 in Super Mario-kun Volume 4. Yoshi drew it "like he saw Mario": an angry beast, complete with a reptile tail, fire breath, sharp fangs and pointy mustaches.

After Mario asks Yoshi to draw him, Yoshi first doodle comes out badly, so Mario tells him to create another one, suggesting maybe to concentrate more on how he sees Mario. Yoshi creates the monstrous Mario, but the angered plumber yells at him to delete it, but then Yoshi notices another icon near the Undodog's: a Bowser icon. Yoshi presses it and the Kaiju Mario comes out from the screen and attacks them. Yoshi, drawing a watermelon and pressing the Bowser icon again, realizes how it works: the drawing comes to life and attacks the artist.

The Kaiju Mario attacks the heroes left and right by stomping them, slapping with its tail, singing deaf-tone tunes, puking paint on them and burning them with his breath. Yoshi tries to melt it with water, but fails, so the heroes try to reach for the SNES Mouse and undo the creations, but are constantly stopped by the monster. Finally, Yoshi trows a Super Mushroom to the SNES Mouse, summoning the Mario Paint's eraser. With that, Mario destroys the Kaiju Mario, splicing him into confetti-size pieces. Bowser, watching the fight from a camera, is happy: Mario won, but at least he now knows how to get rid of the test creations he made with the Bowser icon.