Dolphin is a gentleman who was exiled to the Island Sanctuary Devilish with his fellow Ghost Saints, by the Pope . Anxious to recover the hull Sagittarius Gold Cloth , in the hands of the Bronze Saints loyal to Athena, Gigas enlists the help of Dolphin and his companions, in exchange for letting them return to Sanctuary if successful. After receiving the order, the Ghost Saints destroy military ship hijack tanker Grad Foundation , claiming that the Bronze Saints arise there with the golden helmet or destroy the ship, causing a major ecological disaster. Once the Knights come to the boat, Dolphin and fellow Sea Serpent , no mercy with pegasus Seiya until techniques are overthrown by Shiryu Technique Rozan Sho Ryu Ha, and Diamond Dust of Cygnus Hyoga , while Andromeda Shun beats Jellyfish Saint . Before being defeated, Geist invokes an illusion that distracts the Knights and allows Dolphin and his companions escape, but not before catching the golden helmet.
Like his peers, his armor looks more like a wetsuit that the protection of a warrior of Athena, still have more thoughts about parts of armor than their peers, with the exception of Geist. It is black and white, leg protectors cover to mid-thigh, also has protective arms below the elbow, shoulder pads, breastplate, belt and a helmet with eyes that prevents him most of the time. The material covering the rest of the body seems to be normal fabric.