The Royal Thieves are a band of criminals previously led by Sock the Eelektross, until her supposed death by Vivi and Corma.

No exact member count is known, though Socket does mention they have over two dozen, not including trainees. Tari and Papyrus both had at some point been trainees. The former was kicked out, and the latter was promoted to leader.

No more information is known about this group.