The Deathless Custodians are the primary engineering and logistics wing of the Deathless Circle, and notably are responsible for the maintenance, expansion, and defense of the ancient Jovian outpost known as "The Fulcrum". The Custodians have their own research and development group focused on the Fulcrum, Jovian stargates, and other notable sites in the Zarzakh system, but also work closely with the other divisions of the Deathless Circle.

While their most cutting-edge research and deepest delvings into the technological treasure-house that is the Fulcrum are closely guarded from prying eyes, the Custodians are rumored to be working on projects to expand the capabilities of the Fulcrum, develop new spaceship technologies, and even on advanced cloning techniques. If there is any truth to these whispers it would seem that the power of the Deathless Circle is set to grow even further.