Dark Realm planet three, abbreviated DR-3, was the supposed third dark planet in the Dark Realm, it consisted of pure dark side energies, and was one of many planets where evil spirits resided. Information from holocrons stated that the planet was in the core of the Dark Realm, and was one of the largest planets known in the Realm's core. The discovery of this planet was by Roth Leerdo, a research scientist who studied various Jedi and Sith holocrons for information on planets in the Realm, and was also one of the people who helped discover the Dark Realm itself.