Rhea is a Secondary Pallasite who investigates the battle between Hati and the Saints. His true powers have not been seen, but he is strong enough to catch Koga’s Pegasus Meteor Fist with little difficulty. He admits he finds the power of the Pegasus Saint interesting, before leaving, revealing to the Bronze Saints just how much more powerful the Secondary Pallasites are. He appears again facing Shiryu and Ryuhou, showing his powers to use a servant to fool Shiryu long enough for him to strike a powerful blow to the Gold Saint before facing Ryuhou, showing how easy he can handle the Bronze Saint. However, after Ryuhou awakens what appeas to be the Omega Cosmo and collapses after destroying the servants, Shiryu defeats and kills Rhea with his legendary Rozan Sho Ryu Ha.