|Family & Friends|
Gammy McGuire (grandmother)
|Friends:||Melina Bianco (Love Interest)|
|Pet(s):||Lizzie (formerly; a lizard)|
|Last appearance:||Magic Train|
Matthew "Matt" McGuire is Lizzie's younger brother.
- Matt started kindergarden in 1996.
- Matt once got his head stuck in the banister, and Gordo helped free him.
He is a scheming, witty, cheeky young prankster who goes to extreme lengths to continuously annoy and irritate Lizzie. At school, he is the class clown. He can be lazy, and, although he does have many potential talents, he doesn't use them much. His best friend is Lanny Onasis, who never speaks, but Matt can understand him anyway. Matt is sometimes menaced by a bully named Haywood Biggs.
Matt plays organized soccer, although he's not very good at it.
Matt's Friday night bedtime is nine o'clock.
Matt does not like Jo's chicken noodle casserole.