Modeler Morpheus is one of the sons of Hypnos, the one in charge of controlling the dreams of heroes and monarchs.
Morpheus is sent with his three brothers in search of tenma , with orders to imprison his body and soul into Morphia , a place in the Dream World where they are trapped souls of heroes and kings. After get it without difficulty, Morpheus locks Tenma in a dream in which Hades and Athena are still mere children, and where the Holy War do not exist, making Tenma believe that everything that happened so far has been only a dream. But attempts to rescue Athena Tenma, taking control of your “younger self” in the dream, and guiding you to a picture of Sagittarius Sisyphe , thus awakening Tenma memory before being expelled by Morpheus sleep and causing the Saint wake the false reality.
Upon release of the power of Morpheus, Tenma attacks with his technique Pegasus Ryu Shu ken , but is unaffected Morpheus, trapping Tenma Poppies in a network of the Underworld, to absorb all his feelings and emotions to leave an empty shell . But then, moved only by sheer force of will, Tenma is released, and his Cloth becomes a Gold Cloth , striking a single blow then ends with Morpheus, who realizes before he died that Tenma had a vision in the Hades that he seemed to be made of the effect of awakening the poppies. Later his soul would be claimed by his brother Oneiros to form a monstrous creature, but is destroyed by the sagittarius Golden Arow, imbued by the Cosmos of Athena, and split into four by El Cid to attack the four souls to time.