Matt is one of the CPU Miis and arguably one of the most recognizable of the official Nintendo Miis.
He also appears as the trainer for Boxing.
Matt throwing tennis balls at the player as part of Boxing training
In the Wii Music artwork he plays the güiro.
Wii Sports Resort
Nintendo Switch Sports
As of the version 1.2.0 update, Matt is a hidden opponent in Nintendo Switch Sports. He can be fought by holding down and or and while selecting the Powerhouse difficulty in Chambara. This is a reference to him being the best player in the same sport back in Resort (when it was called Swordplay). His appearance has been updated on the Switch; now his skin is darker and some of his facial features have slightly different positions. In Nintendo Switch Sports, he wears the Official Gear (Purple) clothing. His in-game title is "Legend."
- In the background of the Boxing training gym, some newspaper clippings can be found of an implied younger version of Matt fighting as a professional boxer. Text can be seen saying "Go Champ!", "K.O.!", and "LEGEND." The images feature an implied younger version of Andy and an indistinguishable male Mii.