Shediac is a greyish-blue supply shed Theodore met while he was at The Repair Dock who supplys the tugboats with their bumpers. Shediac works with Hank so he can get new bumpers. Shediac also gave Sigrid a special green bumper in Sigrid and the Bumpers. He first appeared in the season 3 episode, Theodore Lands on Earth. He & Clayton are always seen in season 5.
- Shediac shares his name with the town of Shediac, New Brunswick, which holds the nickname "Lobster Capital of the World".