Brotherhood of Shadows

UNEARTH. Brotherhood archivist who steals an Architect data core from her own faction and deliberately lets the leak transmit.

DARK CELL. Rampart's son. Faked dead, run for years as a Brotherhood asset, first target out the door.

The Brotherhood of Shadows isn't just world-building texture — it's UNEARTH's Dr. Amara Kess's own faction (which she betrays), it runs Cutthroat as a deep-cover asset in Dark Cell, and its Scholar Wing is name-checked in the setting guide as the only archive that predates BAFO. One quiet organization, load-bearing in three separate stories.