Embedded in the heart of the glowing ball of churning fire that the other islands surround is the White Void Desert. In this hostile wasteland, everything is white - the sky, the sand, even the plants. Sapient life persists here regardless, however. They are known as the voidwalkers.
Voidwalkers are humanoid marsupials that live within the White Void Desert. They are extremely hardy, with incredible amounts of stamina compared to other sophonts, the ability to go ages without food or water, and the ability to - if needed - drink the blood of other animals with their sharp, hidden mandibles.
Voidwalkers have a sort of pseudosexual dimorphism, as in, the dimorphism may or may not be linked to any sort of sexual characteristics, but they are certainly relevant to voidwalker gender roles. Some voidwalkers develop tusks, others develop thick, calcified masks on their face.
Tusked voidwalkers are generally thought to be quick and agile. Over all, they are expected to take on "external" roles, such as scouts, gatherers, hunters, diplomats, traveling merchants, messengers, couriers and sailors. Of course, the specifics vary by culture.
Masked voidwalkers are thought to be strong and sturdy. In contrast to the tusked, the masked are expected to take on "internal" societal roles, such as sentinels or guards, caretakers, medical professionals, storytellers, management and farmers.
Sunspot City is the capital city of the White Void Desert. Situated next to a cool spot in the star's surface that's been artificially expanded into a gate for Gapblimp access, the city and its inhabitants live off exports and imports to and from the entire island.
A network of seven or so small villages and towns, connected by a set of roads trampled flat by travelers on foot or on "horse"back. Usually, travelers between these towns are roaming caravans of nomadic tusked merchants exchanging wares, specialized messengers tied to a specific town, and wandering, six-pointed mage-priests that perform a vairty of magical or spiritual services.
Each town has an oasis at its center. "Horses" are common.
Surrounding the towns, there's a big raised ridge, the Arc, directly to the north. Otherwise, it's a desert so flat that you could watch your dog run away, and it would last three days.
Spiritual and magical services are usually practiced by wandering mage-priests. These are considered to be a separate, third gender known as being "six-pointed". Usually six-pointed are former tusked who had their tusks surgically removed, but the gender/occupation is also made up of individuals who either lack tusks/masks, or with heavily reduced tusks/masks.
A reclusive society living in a large, underground cave system.