Secunda was a world in the Forerunner ecumene. In the later years of the Forerunner-Flood war, during the crisis surrounding Master Builder Faber's fall from grace and the attack on the Capital, Secunda was the site of an emergency council between several high-ranking Builders intending to testify about the Master Builder's corruption to the Juridicals to protect their own status. Among them was Maker-of-Moons, one of the designers of the newer series of Halos. Before Catalog could take their testimonies, however, Faber's personal Builder Security forces intervened and captured both Catalog and Maker-of-Moons, forcing them into stasis bubbles. Both were later exiled along with the Ur-Didact aboard a Builder hulk drifting in a Burn near Uthera Midgeerrd.
List of appearances
- Halo: Silentium (First mentioned)
- Halo: Silentium, page 88