See how often they participate in the script: HERE.
Character Story: A creature of legend stranded in Link's land, she searches for the fated hero to help her return home. She helps Link with her warping abilities in the complex temples, allowing him to exit and return to the same spot without wasting time.
Race Story: An ancient group of sky-dwelling creatures from legendary stories. Said to have created Hyrule, Link discovers that they are still living in a city above the clouds.