The Rubrae are a striking, all-female species of the open plains, recognized by their crimson eyes, animalistic features, and incredible fertility. They move with an anime-like grace across the tall grasses, celebrating life and motherhood with a culture that eschews heavy clothing in favor of functional, minimalist attire that highlights their soft skin and generous, maternal forms.

Rubrae possess a unique, stylized beauty reminiscent of high-fantasy illustration. They are exclusively female, characterized by large animal-like ears perched atop their heads and long, flicking tails. Their skin is remarkably smooth and soft to the touch, and their eyes are a deep, piercing crimson. Structurally, Rubrae are very slim yet possess exceptionally wide hips and large, heavy bosoms, a biological trait linked to their near-constant state of pregnancy. Most Rubrae encountered are visibly expecting, as they view the carrying of children as their greatest calling. Their attire is intentionally sparse, consisting mainly of embroidered bras and decorative undergarments, as they find traditional clothes restrictive and often tear them off during physical exertion or the onset of labor.

Rubrae society is a communal matriarchy focused on the prosperity of the herd and the raising of the next generation. They do not have men of their own kind; they interact with travelers or use ancient planar rituals to conceive, always producing Rubrae daughters. Their culture is one of openness and lack of shame regarding the body. They spend their days under the sun, tending to communal gardens and training in lithe, acrobatic combat. To a Rubrae, a heavy tunic is a cage, and armor is a burden that prevents the sun from warming their skin. They value physical health and the visible signs of fertility above all other status symbols.

Rubrae typically lean toward Neutral Good. They are deeply protective and nurturing but can be fierce when their territory is encroached upon. They usually worship personifications of the sun, the soil, and the Great Mother, viewing the act of childbirth as a sacred, daily prayer. They value freedom and the natural cycle of life.

Rubrae dwell in the Vast Green or other great prairies. Their architecture is minimalist, consisting of open-air pavilions and silken tents that allow the breeze to flow through. They prefer to sleep in large, communal nests lined with soft grasses and wool, where the pregnant members of the tribe can rest comfortably together.

The Rubrae are generally welcoming to travelers, particularly those who bring new stories or genetic diversity to their plains. They have a friendly rivalry with wood elf-kin and a deep respect for any species that values the protection of the innocent. However, more conservative civilizations often find the Rubrae's lack of clothing and blunt honesty about reproduction to be scandalous.