The protagonist of Glaucos. He was born into the ocean, brought to the earth by two dolphins. The dolphins entrusted him, as an infant, to a villager of some tropical islands. That villager becomes his father. Because of his innate diving abilities Cisse is associated with a local legend on that tropical island, legend that makes him out to be the "prince of the ocean"- able to travel freely between water and land. One day, be it fate or coincidence, he is discovered by an ex record-holding diver named Claude and who, seeing his potential, takes it upon himself to train him and make him the best in the world.