Rauru

Rauru is a character from The Legend of Zelda: Ocarina of Time. Rauru is the Sage of Light and the architect of the Temple of Time, according to the game. He names Link the "Hero of Time".

The fame of Rauru became so great that a town from Zelda II: The Adventure of Link was named after him. Additionally, a stained glass window of Rauru holding the Master Sword, together with the other Sages, Ganon and the Triforce, can be seen in The Legend of Zelda: The Wind Waker.

A Gossip Stone in Ocarina of Time tells Link that the owl, Kaepora Gaebora, is the reincarnation of an ancient sage. This is believed to be Rauru.

The Legend of Zelda: Ocarina of Time
In Ocarina of Time, Rauru is the first person Link meets after having been sealed in the Temple of Light for seven years. The wise old sage tells Link that after he was sealed away, Ganondorf entered the Sacred Realm and touched the Triforce. The sacred golden triangles granted his evil wishes and made Hyrule a haunted land, of which he was crowned King. Rauru tells Link that the only way to stop the Evil King is to awaken the five other Sages in the five temples of Hyrule. Before he sends him out into the world do fulfill this dangerous task, he gives him the Medallion of Light, adding his power to Link's.

After Link has awakened all the five other sages, Rauru telepathically contacts Link and tells him that someone is waiting for him in the Temple of Time. Later, together with the other sages, Rauru helps create a bridge to Ganon's Castle. Strangely, in the ending, all the Sages except for Rauru can be seen, perhaps indicating that he is incapable of leaving the Temple of Light.

The Legend of Zelda: Ocarina of Time manga
In the Ocarina of Time manga, Rauru is only a spirit who lives on in the Chamber of the Sages. He also tells Link that Link was born into the guardian house that served the King of Hyrule. He goes on to say that Link's father was killed in battle and his mother brought him to the Great Deku Tree.