Here we have THEE Boxing Legend Matt from "Tomodachi Island" in the Metro Kingdom and is known to be the LEADER of the M.I.I. Sports Club.
Matt is said to be stronger than both Mario & Wario COMBINED!!
Matt is not only known to be the Champion of the M.I.I Sports Club, he is the TOP CHAMPION of The Metro Kingdom Boxing League!
He's even one of the heroes of the Metro Kingdom and fights villains if it's needed. For example, Matt took out Katsini's Tyranist Troop at Fort Francis, ALL ON HIS OWN!! Matt lands a punch at Katsini so hard, that he made Katsini fly all the way to Shiveria/(the Snow Kingdom).
Matt is known to use both his boxing and swordplay skills to fight evil.
According to Wii Sports Wiki, Matt is known to have a Champion skill level of "1550 to 1649" in Boxing, has a skill level of "1496 to 1500" in Swordplay and has a skill level of "446 to 450" in Basketball.
(Matt is not my character, he is the intellectual property of Nintendo).