Matt was the striker for Lincoln Junior High's soccer team. He, like the other members of the team, wore a red jersey. According to Jim, he was nasty. Ulrich tried to outplay him in the eighth grade interschool finals, but failed because he needed to save Mrs. Hertz from XANA. His eyebrows, face, and body structure are strikingly similar to how Jim would have looked at 13 years old.
Here is some information about a character named Matt. His physical appearance is here<--http://images3.wikia.nocookie.net/__cb20081013151839/lyoko/images/a/ac/Gravite_Zero_115.jpg