Sonia is a young Martian who belongs to their upper class, the High Martians, who encounters Aquila Yuna during her escape with Aria. ~!Her 1st mission as Martian was to assassinate Souma's father, the Southern Cross Silver Saint. It's later revealed that Sonia is the daughter of Mars and half-sister Orion Eden.!~ ~!In the New Twelve Temples battle, Sonia is named the new Scorpio Gold Saint by Medea.!~
