Giga Cat Mario

Giga Cat Mario is a form of Mario that first 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 enough Cat Shines and unlocking the Giga Bell that is located in the middle of Lake Lapcat.

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

Trivia
The form shares some similarities with the Super Saiyan form, which is seen throughout the many eras of the Dragon Ball anime. For example, the gold color and spikes.