Bailesirean is a gender in the Scene System that can be described as, "a gender that's like a ballet". It may feel like watching a ballet, and the feelings that come with watching a ballet.
Bailesirean was coined by Fandom user Reign of the breadsticcs in early April of 2021. The flag was designed by the same user on April 30, 2021.
Bailesirean comes from the Irish word for ballet, "baile".