The Dumps are a rowdy group of Ankylodumps who enjoy jumping ramps, racing, and crashing into each other.
No one knows when the Dumps club began, but they first appeared in "Racetrack" when Drag-O, Wrecka, and Scoot reunited with Ton-Ton, who used to be a member. The Dumps were too rowdy for them, so they built a racetrack for racing, and used the same racetrack to decide who would make the rules. The Dumps appeared whenever there was a big project, in "Slide" and "Volcano." Also, Wrecka appeared in "Garby's Gang."