Arles is a powerful figure who serves as the leader of the enemy faction in Saint Seiya's first arc. Thirteen years before the events of the series, he attempted to kill Athena when she was just an infant. However, his attempt was thwarted by Sagittarius Aiolos. The Pope then attacked Aiolos but managed to escape from the sanctuary, leaving Athena and the Sagittarius Gold Cloth in the care of Mitsumasa Kido.
After learning about the Galaxian Wars tournament between the Bronze Saints and that the real Athena was in possession of the Sagittarius Gold Cloth, Arles sent some Silver Saints to try and kill the Bronze Saints. However, they were unable to assert their superiority over the Bronze Saints and ended up being defeated by them.
At the end of the battle of the Twelve Temples, Saga revealed his identity as the Pope to Seiya. Its also revealed that Saga suffered from a split personality disorder: his evil side was dominant, and lead the Sactuary as the Pope Arles. When his good side finally took control of his body, Saga committed suicide in shame.
Later, in the Twelve Temples arc, its revealed that the man who stole the identity of Pope and tried to kill Athena was Gemini Saga. In order to steal
Later, in the Twelve Temples arc, its revealed that the man who stole the identity of Pope and tried to kill Athena was Gemini Saga. In order to steal the throne and disguise himself as the Pope, Saga killed the previous one, Aries Shion.From this day onwards, Saga ruled the Sanctuary as the Pope Arles. In his favor, most of the Saints didnt know of Shions murder and Sagas betrayal. Some of them knew it, but silenced about it.