The Matrimonni are a unique lineage of humanoids defined by a perpetual cycle of gestation and a profound connection to the sun-soaked plains. Distinguished by their crimson eyes, vulpine or lupine features, and exceptionally voluptuous forms, they carry a magical vitality that keeps them in a permanent state of pregnancy. They are naturalists who find the trappings of civilization restrictive, often shedding garments to better feel the wind against their skin and the life within their round, expanded bellies.

The Matrimonni are a strictly female species possessing smooth, porcelain-like skin and vibrant crimson eyes. They have pointed ears and long, fluffy tails that sprout from the base of their spine. Their physical frames are paradoxically slim yet endowed with exceptionally wide hips and large breasts. The most striking feature of a Matrimonni is her large, round, and firm pregnant belly, as they carry triplets for the majority of their adult lives. They wear only the most minimal support garments, typically fine lace or silk bras and undergarments, as their high body temperature makes heavier clothing intolerable. In moments of exertion or thermal stress, they are known to tear away any restrictive fabrics to expose their midsections to the air.

Matrimonni society is communal and matriarchal, revolving around the shared experience of perpetual motherhood. They live in harmony with the cycles of the sun and the growth of the plains. Rubbing one's belly is a sacred social gesture, a sign of health and a way to soothe the triplets within. Because they are always gestating, their culture de-emphasizes industrial labor in favor of song, magic, and light gardening. They do not view nudity as a cause for shame, but rather as the natural state of a body that is constantly changing and radiating life-magic.

Most Matrimonni lean toward Neutral Good alignments, cherishing the preservation of life and the freedom of the natural world. They rarely worship distant gods, preferring to offer thanks to the sun and the spirits of the fertile soil that sustain their high-caloric needs.

Their villages consist of soft, cushioned pavilions and open-air platforms set within tall grasses. Furniture is rarely hard, consisting mostly of massive, comfortable beds and low tables designed for reclining. They avoid stone structures, which they find cold and unwelcoming to their sensitive, warmth-radiating skin.

They are generally welcoming to travelers, though their minimal attire and constant physical focus on their gestation can be disorienting to more modest cultures. They share a kinship with other elf-like or beast-kin lineages, though they often pity those who do not share the 'Eternal Gift' of their perpetual pregnancies.