The largest planet in the Pact Worlds system, Bretheda is the undisputed homeworld and seat of power for the barathus — amorphous, telepathic beings who can merge and split their bodies at will, creating temporary or permanent composite beings of staggering complexity. This biological flexibility extends to their technology: brethedans grow their tools, ships, and structures from living tissue, producing organic starships and habitat-pods rather than manufacturing them. Their government, the Confluence, is a unique political entity — a composite being formed when multiple barathus merge specifically to govern, splitting off specialized delegates embedded with proprietary biotech and self-destruction sequences to prevent defection. The Sopeth Corporation, one of the system's most powerful biotech firms, is in fact a single permanently merged barathu entity. Bretheda's cloud layers teem with life, from microscopic organisms to city-sized living gas-bags, and the barathus' deep understanding of their ecosystem has given them unparalleled expertise in biological engineering. Several of Bretheda's moons have achieved independent member status, though the gas giant also claims responsibility for the so-called 'death moons' Thyst and Varos — quarantined worlds harboring dangers too great for colonization.