Octeroids, a sentient species native to the water-covered planet Octero IV, were amphibious beings. Their distinct looks and uncomplicated way of living made them well-known across the galaxy. These creatures were generally considered to be peaceful and enormous, with a preference for remaining on their homeworld and a limited reliance on technology. To survive in different atmosphere, Octeroids who ventured into the galaxy used a specially designed breathing device. One example of this species was Glaucus.