Machine, AI, being, God? The best guarded secret of the country of Egypt, Former Earth. One which secured them their galactic future and survival, at the same time, damning them in the eyes of every nation of the Republic for an eternity.
In addition to the Thieves' Guilds, there is a hierarchy that all thieves are part of. Rank is based on skill, and can be raised or lowered at any time. The Queen of Thieves, the greatest living thief in the world, is the ruler. Guildmasters answer only to her, and she answers to no one at all.