city. In the graphic novel The Only Good Dalek the Mechonoids are depicted as having been destroyed by the Daleks, with some of their remains making their way to a human space station where research is being conducted on the Daleks in the hopes of finding a way to defeat them. Movellan Movellans are an android species originating from outside the galaxy. They made their first appearance in the Fourth Doctor serial Destiny of the Daleks (1979) as adversaries of the Daleks. N Nanogene Nanogenes are 'flocking' nanobots that repair damaged tissue. In the two-part story, "The Empty Child" and "The Doctor Dances" (2005), Nanogenes inadvertently use a dead child as a template, reproducing the same injuries on anyone the child touches. The Nanogenes restore those it converted after they are provided with a complete human template. Q Quark The Quarks appeared in the Second Doctor serial The Dominators by Henry Lincoln and Mervyn Haisman in 1969. The Quarks were used on Dulkis by the Dominators to enslave and terrorise the indigenous Dulcian population to ensure the drilling of bore holes through the planet's crust. The Dominators planned to use their technology to fire seeds down the holes which would force the core to erupt, thus providing a new fuel source for their fleet. The Quarks were rectangular, with four arms: one pair which folded into the body, the other pair being retractable. On the end of each arm was a solitary claw. The spherical head was divided into octants; the upper four octants formed the sensory hemisphere, which detected changes in light, heat and motion. At five of the corners of the octants were directional crystal beam transmitters (the sixth corner joined with the robot's extremely short neck). Quarks communicated by means of high-pitched sounds. Their tendency to run out of energy quickly was their primary weakness. A Quark was also seen in the serial The War Games. The Quarks were designed as an, albeit unsuccessful, attempt at creating a merchandise property, as the Daleks had become earlier. Quarks are also referred to in the Big Finish Productions audio drama Flip-Flop. When they attacked the space yacht Pinto, the Seventh Doctor and Mel sought leptonite crystals in order to defeat them. It is not known whether the Doctor defeated the Quarks on that occasion. The Quarks were also mentioned, and mocked viciously, in the Doctor Who Unbound audio play