Giga Cat Mario

Giga Cat Mario is a form of Mario that only appears in Super Mario 3D World + Bowser's Fury, albeit exclusively in the Bowser's Fury mode. It is a larger, more powerful form of Cat Mario and is only accessible after collecting from five to fifty Cat Shines, which awakens a Giga Bell, of which there are only three in Lake Lapcat.

Giga Cat Mario's fur takes on a more radiant golden tint than regular Cat Mario's, with a lion mane and a tuft at the end of his tail, resembling those of a . While Mario transforms into this state, he strikes the same pose that regular Cat Mario does in official artwork.

In stark contrast to other giant transformations such as Mega Mario, and in a similar vein to Big Mario, Mario is not invulnerable in this form, and he is in fact still able to take damage, being able to return to his Super and Small forms (though he stays giant).

At the end of the final battle against Bowser, Plessie obtains all three Giga Bells simultaneously and transforms into , which differs from Cat Plessie only in the overall size and in the eyes never staying wide open, while the rest of the appearance is the same. After the ending cutscene, the camera zooms out to reveal that said cutscene took place on Giga Cat Plessie's back. Plessie permanently changes to Cat Plessie following this.

After collecting all 100 Cat Shines and then defeating the final boss of the Bowser's Fury mode again, Cat Mario's appearance in the mode is changed to resemble Giga Cat Mario's (though the Lucky Bell collar is retained); this change is only aesthetic and does not affect Mario's moveset in any way.