The Brotherhood of the 3rd Sons is a prestigious and powerful order, so named because each of its members is the third-born son of their family. This tradition, followed for centuries, is deeply embedded in the culture of Morpus, a planet orbited by three moons. Among them, the largest and most influential is Moros—a lunar domain ruled entirely by the Brotherhood. The Brotherhood not only governs the moon but also serves as an extension of religious, military, and judicial authority across the region.
To be the third son is considered a sacred and exalted role. Families across Morpus often grow exceptionally large in pursuit of producing a third male heir, a custom that reflects both religious devotion and a desire for social ascension. Once born, the third son is taken and inducted into the Brotherhood—a ritual viewed as both a sacrifice and an elevation. This system ensures a continual influx of recruits, maintaining the Brotherhood’s strength and influence. Families who successfully give a son to the order gain prestige, and their names are etched into the collective memory of Moros.

The elite warriors of the 3rd Sons are fearsome figures who wear the largest and mightiest suits of armour available to the brotherhood, an advanced and heavily adorned suit of power armour that symbolizes their sacred role within the Brotherhood of the 3rd Sons. These warriors are among the most loyal and capable of the order, chosen for their strength, discipline, and deep commitment to the will of the gods.








A Mage is the rarest of 3rd sons. An individual blessed with the power of the gods they lead the armies of The 3rd Sons using their prodigious powers against the foes of Moros. To be a Mage is to be in communion with the will of the gods and thus privy to the secret wars that rage unseen by the rest of the brotherhood.























































































