Sagitta Maya is one of Silver Saints. He appeared in the first Saint Seiya movie (The Battle with Eris) were he was a part of a group of revived Saints called "Ghost Five". His technique is Hunting Arrow Express.
(Saint Seiya wiki)
This is an exclusive (filler) character for Saint Seiya: The Battle with Eris movie. He should not be confused with Tramy, also Sagitta Saint, from the manga