Rocky is introduced in the episode, "Deep Trouble". Elbone becomes lost in the Maze Caves while trying to map them for at lest a day and half. To pass the time, he plays Tic-Tac-Toe with a rock he names 'Rocky'. Rocky wins every time. The Rescue Riders eventually find Elbone, and at the last moment, he grabs Rocky and takes it with him. Later, Burple accidentally eats Rocky, but coughs him back up for Elbone.
In "Divewings", Elbone accidentally dropped Rocky into the ocean, but fortunately Summer rescued it. Later, while Elbone was using his boat to collect trash from the ocean, Rocky fell overboard and was found by Gill. The dragon returned the stone to it owner.
Rocky is an oblong grayish rock with eyes and a mouth drawn on it.
|“||Rocky! Let's head back to my house boat. You can be my first mate! Or my anchor. We can decide later. [src]||”|
Rocky serves as a companion for Elbone throughout the series.