Rocky is introduced in the episode, "The Nest". 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.
Rocky is an oblong greyish 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.