The Machine Palace (also known as the Machine Moon Base) is the main lair of the Machine Empire, as seen in Power Rangers Zeo: Revisited. After destroying the Moon Palace of Rita Repulsa and Lord Zedd, King Mondo had the lunar surface fortified into the Moon Base to house his many mechanical servants and war machines. Quadrafighters and Cogs are frequently seen pacing back and forth in front of the main palace, where Mondo coordinates his attacks on Earth with his wife Queen Machina, his children Prince Sprocket and Princess Circuitrina, and manservants Klank and Orbus.