From Wikipedia, the free encyclopedia. Zelda Rae Williams (born July 31, 1989) is an American actress, director, producer, and writer. She is the daughter of actor and comedian Robin Williams and film producer and philanthropist Marsha Garces Williams. As a voice actress, she is best known for voicing Kuvira in the Nickelodeon cartoon The Legend of Korra. Description above from the Wikipedia article Zelda Williams, licensed under CC-BY-SA, full list of contributors on Wikipedia.