Nemesis (in Japanese: ネメシス), also known as the Negamoon, is a planet that is composed of the Evil Black Crystal and home to Wiseman and the Negamoon Family. It was thought to be tenth planet of the Solar System. Nemesis was a dark place where very few flowers grew. The planet itself was made of the Evil Black Crystal, which was capable of absorbing light, much like a black hole. This would cause the planet to appear and disappear from the sensors tracking it in Crystal Tokyo, making its orbit seem erratic and difficult to trace.