Impa

Impa is a caretaker to Princess Zelda. There are multiple versions of the character named Impa throughout the Zelda series, just as there are multiple Link and Zelda characters. As with Link and Zelda, all versions of the character share personality traits.

The original Impa (appearing in The Legend of Zelda and The Adventure of Link instruction manuals, but not in the actual games) is portrayed as an old woman who calls for Link to save Zelda from Ganon and his henchmen. The Impa of Ocarina of Time is a Sheikah, and the guardian of Princess Zelda. It is later revealed that she is in fact the Sage of Shadow, one of the seven sages in the Zelda universe. She is also a main character in Oracle of Seasons and Oracle of Ages. In Twilight Princess, a character named Impaz dwells in a village which Hylian text suggests is called "Old Kakariko Village", and claims both that she is serving the Royal Family and that she was named after the founder of the village. The Impa from The Legend of Zelda is also supposed to be the same Impa who appears briefly in the Phillips spin-off Zelda: Wand Of Gamelon.

Recourses

http://en.wikipedia.org/wiki/Impa#Impa