Robo-Dog has a metallic white body and blue ears. His face is a gray screen with blue holographic eyes and a black nose. His collar is orange and bears a blue tag with a white paw on it. His tail serves as his antenna to receive commands from Ryder's controller.
Robo-Dog is Ryder's dog robot. He was created by Ryder, with some help from Rocky. Unlike the other pups, Robo-Dog does not speak in sentences and only communicates through barks.