Bubble Mario

Bubble Mario is the form that Mario takes when he uses a Bubble Flower in Super Mario Bros. Wonder. While in this form, the player can blow bubbles that follow a straight path unless they get drawn to an enemy. Bubbles that hit enemies trap and transform them into a coin. Unlike Fireballs, bubbles can go through walls and defeat enemies that normally cannot be defeated such as Dry Bones. The player can also jump off of them. These abilities are inspired by those of the Bubble Baby Yoshis in New Super Mario Bros. U.

Bubble Mario wears a pink hat and shirt with red overalls, similar to the overalls given to Fire Mario and Ice Mario. Bubble Luigi is the same, except his overalls turn green. Unlike Fire Peach, Bubble Peach's colors keep the original pink on her panniers, collar, and frill, while her dress and heels become purple. Unlike Fire Daisy and Bubble Peach, Bubble Daisy's colors of her panniers, collar, and frills are uniquely yellow, matching her regular dress color instead of her signature orange color while also still having her dress and heels purple. Bubble Yellow Toad and Toadette's colors are the same as their corresponding Fire forms, except that the red in their caps, vests, and pants are recolored to pink and purple respectively.

Bubble Mario's colors closely resemble Luigi's pink alternate color from the Super Smash Bros. series, which is referred to as "Strawberry Luigi" on the original Super Smash Bros. website.