These astrians are fan created astrians who have been approved and are considered official fan astrians for all intensive purposes. This means that no other approved astrian can have the same color. Moreover, the approval ensures that no official astrians are set to use the color so there is never an issue with overlap. Guild Astrians have the added responsibility of keeping their astrian active but using it in someway (creating stories, cosplay, artwork, participating in events and challenges, etc). Astrians in other groups are always eligible to become guild astrians. Guild astrians can earn titles and other perks through participation.