Matt was a character created to promote Wii Sports from Nintendo, and he became quite popular ever since the first promotional videos, with him having made quite the ruckus in the Friday Night Funkin’ world, as he is a character that has many appearances, just like this one, where you battle him during three weeks and nine awesome songs:
Challenge the king of Wii Sports, Matt!
Whether you duel this character in the story mode or free play mode, the way to win is the same, and it is by reaching the end of the songs, which can only be done if you play all their notes according to the charts correctly.
To do this, when arrow symbols above BF match one another, you will press the identical arrow keys from the keyboard, but don’t miss the moment multiple times in a row, since that will make you lose. Good luck!