The Sky Children have pale blue/ grey skin, are of quite slender build and spend their entire lives in the sky. They can be found in the Lodestars, often acting as stewards of the sky beacons, which they built.

Diphta was the first Sky Child that the group encountered, in episode 2. After being rescued by the party and subsequently touching the ground, she began to mourn the apparent loss of her status as a Sky Child.

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