Orion Eden is an enigmatic young man, the Orion Saint in the Omega era. Eden commands the element of Lightning.
From The time he was young, Eden has been intimately connected with the army of Martians. He is a son of Mars, and plans essential to the war god. It has always created together with other Martians.
Mysterious and distant, Eden believes in the dominance of the strong and disregards the weak, putting his faith in his own strength. However after meeting Subaru he starts to realize how important friends and having someone to protect is. Then later in their fight with Saturn he tells Koga that he is glad to have met him and fight by him. Eden could be considered similar to Phoenix Ikki in both appearance and personality.