Bluestargender is a term with two definitions:
A fictigender-kingender xenogender in the Warrior System, in which one's gender is associated with the former ThunderClan leader and current StarClan resident Bluestar. The association to this character can be made through her appearance, personality, choices or history. This gender is feminine-aligned, with a fierce blue energy.
A xenogender that feels influenced by/connected to Bluestar, some may feel a connection to different parts of Bluestar's history, EX: One may feel as their gender is connected to the Bluestar from Into The Wild. It may be feminine-aligned.
History
Bluestargender was coined by FANDOM user Moss the RainWing on July 13th, 2021.
The second definition was coined by FANDOM user AlTheWolf on October 8th, 2021.
Flags
The flag for Bluestargender was created by the same person who coined the gender & made the page on August 4th, 2021.
Each stripe in the flag was colour-picked off Bluestar's official reference (except the middle one, that was colour-picked off her alternate reference). Grey is for utmost loyalty, light blue is for generosity and dark blue is for ambition.