White Cat Mario

White Cat Mario is a white, sparkling version of Cat Mario that appears in Super Mario 3D World + Bowser's Fury, obtained by collecting an Invincibility Bell. It functions similarly to White Tanooki Mario, granting that form's invincibility and Cat Mario's abilities. The Invincibility Bell and its resulting form can only be obtained if the player scans the Cat Mario or Cat Peach amiibo that launched with the release of the game, with the Cat Mario amiibo always producing an Invincibility Bell when scanned and the Cat Peach amiibo having a chance to produce it among other power-ups. However, unlike White Tanooki Mario, using White Cat Mario in a level does not tamper with the stars in the save file.

In the Super Mario 3D World campaign, characters will remain in their White Cat forms until they lose a life or complete the selected level, and they do not change into other power-up forms, even if they touch other power-ups. However, in the Bowser's Fury campaign, Mario will always change forms with any power-up he contacts, even while in White Cat form.

As with Invincible Mario, White Cat Mario will take damage and revert to Super Mario if he touches any of the black goop that surrounds Lake Lapcat in the Bowser's Fury campaign.