The Dummy Grass Island was a small secret island located far from the main island. Its purpose for the game was unknown. Because of its distance from the main island, getting there proved to be a very difficult task.
The Dummy Grass Island was an entirely green island with a house and a sign. The sign's label was slightly askew and said "The Dummy Grass Island???". Inside of the house were 2 grey dummies, Tim's Juice Worker and a nameless dummy. It was located next to the Colosseum.