Costume Mario

Costume Mario is the result of the player playing as numerous Nintendo and third-party characters, objects and groups or combinations thereof in Super Mario Maker 2 Plus. Originally the form in the ' game style that Mario takes after touching a Mystery Mushroom, originally exclusive the the original Wii U version of ', allowing Mario to transform into those costumes, Costume Mario in the original , but this was replaced by multiplayer mode. However, it was revived and reused in Super Mario Maker 2 Plus. Upon scanning certain amiibo onto on either  or, a pixel art version of the amiibo character will be unlocked in the character selection settings rather than course maker, allowing the player to use it any time from then on without having to scan the amiibo again. In addition to amiibo characters, the player can also play as certain objects, such as a ? Block. Costumes can also be unlocked through Remix 10 including the characters which have amiibo unlock conditions, or by completing certain Event Courses.

There are a total of 206 costumes in the game, consisting of 161 base costumes (98 of which can be unlocked by completing an area in Remix 10), and 51 additional ones that are gained either from Event Courses, free minor updates, or playing Remix 10 on the Normal, Expert, and Super Expert difficulty levels. Each costume that can be unlocked via Remix 10 can be unlocked randomly at a fixed difficulty tier. Completing a Remix 10 area in a given difficulty gives a chance to unlock a costume from that difficulty or lower.

Unlike in Super Mario Maker, the costumes cannot only wear Buzzy Shells and Spiny Shells, but can also be used in the ', ', ', and ' game styles; an addition, the costumes' appearances in the New Super Mario Bros. U and Super Mario 3D World styles have virtually no animation, similar to the in . Moreover, if a costume character acquires a power-up that he or she didn't already have, then the player will receive a power-up mark similar to the goal mark from levels with clear conditions.