Matthew Parker is an inquisitive 12-13 year old who loves to tinker with things—often to the consternation of everyone around him. But when he isn't breaking and rebuilding stuff, he's helping Emily Jones solve mysteries around town through the Jones and Parker Detective Agency (Emily claims that he is her sidekick; his side of it is that they are partners). He is in a secret tinkerer's club that meets in Haggler's Junkyard. Matthew was also the third person to try the Inspiration Station, the other two being Whit and Connie.
Main article: Parker family
Matthew is the son of David Parker and Eva Parker and the middle of the three Parker children. He has an older sister, Olivia, and a younger sister, Camilla who loves soccer.
- He takes French class.
- He once broke his wrist by trying to catapult over his neighbors' fence with a swing.
- He once removed 3 screws from the garbage disposal at Whit's End, though he ended up putting them back.
- He once programmed his dad's GPS so it said they lived in Saskatchewan.
- He was born in Odyssey.
- He once took apart a Turbo X-300 Laser Blaster Pinball Machine.
- In a Room of Consequence adventure he became a youth pastor. (#718: “For Three Dollars More”)
- He has a crush on Suzu Rydell (#804: “The Key Suspect”)
- He loves to take apart his own and other people's gadgets.