A freelance organisation of archaeologists that recovers artefacts and returns them to their rightful owners, run in the field by Petra Aberdeen and quietly funded by Admiral Jean-Luc Picard.
The guild appears in the third season of Lower Decks. Its recruiter, Petra Aberdeen, a former Starfleet officer, is first seen running a rival stall beside the Starfleet booth in Reflections, where she mocks Mariner and Boimler for following orders.
After Mariner is wrongly blamed for a damaging news report in Trusted Sources and transferred off the Cerritos, she resigns and joins Aberdeen. The pair raid tombs and vaults in The Stars at Night, and Mariner grows suspicious about who pays for their well-equipped ship, guessing at some criminal patron.
The backer proves to be Picard, an archaeologist himself, who wants artefacts preserved without Starfleet bureaucracy. Mariner then takes the ship to rescue the Cerritos from the rogue Texas-class vessels, and returns to Starfleet at the end of the episode.