Legend of Zelda Impa the Sage of Shadow Fan Art (Select Size)

Impa is a Sheikah and the Sage of Shadow. She's the fifth Sage that lends their power to the Hero of Time. It is hinted that she, like Zelda, was aware of her status as Sage before becoming one.

When the evil spirit she had locked away in the well of Kakariko Village years ago broke free, Impa immediately headed for the Shadow Temple to seal it away again. When Link followed after her and defeated the spirit, she awoke as the Sage of Shadow. She told Link her point of view on the day she and Princess Zelda fled Hyrule Castle and ensured him he'd do fine as hero. Then she gave him the Shadow Medallion, staying quiet until Link took up arms against Ganondorf himself; then she fulfilled her role as Sage and could later be seen traveling to Death Mountain with the other Sages.