Andronican Master

The unnamed alien, the Andronican Master, was on a mission to find a sacrificial king for an annual rite performed on his home planet of Andronica. Since his race value positive character traits above all things, the sacrificial king was to be the embodiment of negative character traits, making Dr. Smith a very good candidate. The Master controlled a crew of human-looking androids which he used to entrap Smith. He later provided an android duplicate of the Doctor in order to trick the Robinsons long enough to allow him to leave with his victim.