Aginah

Aginah is one of the descendants of the Seven Sages in the backstory of A Link to the Past. Aginah's role in the game was minor compared to that of Sahasrahla. He is one of three characters (apart from the Seven Maidens) to appear during the course of the game who is a direct descendant of the Seven Sages, the other two being Sahasrahla and the Lost Old Man on Death Mountain. Aginah is found living alone in a cave known as the Desert Sanctuary in the Desert of Mystery and tells Link about the Book of Mudora and where to find it. He is one of the first to mention the prophecy of the Great Cataclysm to Link and like Sahasrahla, he has telepathic powers, though he doesn't contact Link with them. Instead, his telepathic powers give him the ability to sense events in the Golden Land (or Ganon's Dark World), as seen in one of Link's interactions with him.

Inishie no Sekiban
Aginah reappears in Inishie no Sekiban, where he plays a much larger role than in the previous game. Now wearing robes of the same color as Saharahla, he lives in Saharahla's Hideout near the Eastern Palace and is the first person to discover the Hero of Light. Throughout the game, he uses his telepathic abilities to directly contact the Hero of Light to advise him and impart his wisdom. It is also revealed that he is the younger brother of Sahasrahla, who left Hyrule some time prior to the game to search for Link.