The beavers have the appearance of regular beavers complete with buckteeth, large brown noses and tails, though each of them has a different shade of brown.
In the show
In "Hildy the Good", our heroes celebrate Whatever Floats Your Boat Day by relaxing on boats through the creek. Hildy temporarily puts a stop to it by magically breaking the Jollywood Dam to wash away the Queen. But Dopey whistles to call for the beavers, and soon the beavers quickly build a new dam made of twigs to stop the water flow, saving Delightful along with Starchy. The beavers along with The 7D and Delightful celebrate with a dinner, which are plainly logs. Later, Hildy becomes "good" in another attempt to take over Jollywood by becoming friends with Delightful. Hildy and Grim finally seize the castle by imprisoning Delightful and Hildy crowns herself queen (Grim mistakenly sends Starchy to The 7D's mine, where they quickly spring into action). The 7D arrive at the castle with the beavers as their backup, and they placed the Glooms into a large shipping crate, sending them to a small tropical island.