Here are a few characters I thought of a few years back, a pair of Gelrien siblings. Cyan, the older brother, and Sapphire, the younger sister. Cyan is an up-and-coming rapper/singer. Sapphire is learning to dance. They often practice and perform together.
For details on Gelrien gender differences, please see my reference picture: https://www.weasyl.com/~oddymcstrange/submissions/1768365/gelrien-gender-reference