Guysborough is the Big Harbour's garbage barge and has a grumpy personality and calls everyone else "rotten".
The only ones who can stand him are Jasper, Theodore and Digby. His catchphrase is "Theee-o-dorrre!" ... which Theodore once used as a foghorn when the lighthouse was out to prevent a shipwreck, in a hilarious solution to an otherwise serious problem. He enjoys the stench and dirty work of collecting garbage and absolutely hates being clean. 
- Season 2 - Theodore the Jokester
- Season 3 - Grumpy Garbage Barge and Emily's Close Call
- Season 4 - Guysborough's Garbage
- Season 5 - George and the Flags (cameo), Foduck and the Shy Ship, Guysborough Makes A Friend and Theodore Takes Charge
- Guysborough's model is currently on display at the Maritime Museum of the Atlantic.
- Guysborough's nature is similar to Oscar the Grouch from Sesame Street for being called "rotten" as a nice gesture.
- He is named after Guysborough County on the south shore of Nova Scotia.
- ERTL (bath toy, discontinued)
|Big Harbour Barges|
|Bayswater • Barrington • Bobby • Bonavista • Brunswick • Guysborough • Shelburne • The Junk Barge|