Builder Mario

Builder Mario is the form Mario takes in Super Mario Maker 2 after collecting a Super Hammer, a power-up found exclusively in the Super Mario 3D World style. It changes Mario and Luigi's attire to yellow shirts, colored overalls, a tool belt, and a hardhat (Toad and Toadette also gain the latter two objects.). It grants Mario and co. the ability to swing a large hammer to slam the environment and enemies alike. Unlike Hammer Mario, where the hammers are arched projectiles, Builder Mario uses them as a melee weapon. Builder Mario can also create a maximum of five crates at a time to be used as platforms.

In Super Mario Odyssey, a cap and outfit based on the Builder Mario appearance (named the Builder Helmet and the Builder Outfit respectively) can be purchased from Crazy Cap stores in Metro Kingdom.

In Super Smash Bros. Ultimate, Builder Mario as an alternate costume of Mario.

Trivia

 * Builder Mario's design comes from the Wrecking Crew series, where Mario also wears a helmet and attacks with a hammer. The helmet's appearance is similar to the one in Wrecking Crew '98.