The Daleks were the housing for the mutated Kaleds, inhabitants of the planet Skaro. The Kaleds warred with Skaro's other inhabitants, the Thals, for hundreds of years, making most of the planet uninhabitable. Davros reasoned that the Kaleds were mutating and so speeded up the process. He altered their brains to remove emotion, compassion and morality, turning the Kaleds into perfect fighting machines. Info... http://www.bbc.co.uk/doctorwho/classic/episodeguide/index.shtml http://www.doctorwhoworld.org.uk/

The liver is evil - It must be punished.