Matt Braddock is a 7-year-old sitting charge of the BSC. He was born profoundly deaf and uses American Sign Language. He has an older sister, Haley Braddock.
He plays on Kristy Thomas's baseball team, Kristy's Krushers and is one of the best players on the team. He also plays soccer. Matt participated in the Wiffle Ball Derby at the BSC Mini-Olympics. He gets some glory for finding Jake Kuhn after he goes missing from baseball practice. In Book 101, Matt dresses up as a baseball player for Halloween and goes trick-or-treating with Jake.
He plays tom-toms in the kids' band the BSC organizes called "All the Children of the World" and can feel the beat.
- His laugh sounds like a cross between fingernails on a chalkboard and a goose honking.
- He attends the Valentine's Day Masquerade party.
- Matt attends school for the Deaf in Stamford since he was two years old. Ms. Frank is one of his teachers.
- Matt and Haley participate in the BSC pet show as official pet handlers and they end up winning the "Best Pet Handlers" prize.