King Piccolo (ピッコロ大魔王, Pikkoro Daimaō; lit. "Piccolo the Great Demon King"), sometimes referred to just as the Daimao (大魔王; Daimaō; lit. "Great Demon King") was a Demon who once precipitated the Earth into utter mayhem and pandemonium, spawning an army of animal-like Demon sons and converting a peaceful planet into a living hell. Later, it is revealed that he was the Demon counterpart of Kami; Kami was originally a Namekian who had forgotten his name, and witnessed the evil deeds of humans while growing up. When the nameless being learnt of the Guardian of the Earth and that its role could be passed down, he sought for the title and position, but the Guardian-then rejected him as he knew that the Namekian's heart was possessed by a demon. Knowing that he would only be accepted for the role if his heart was pure, the Namekian split himself into two beings; his good half, Kami, and his evil half that would later become the great demon king, Piccolo.
He served as the main antagonist of the King Piccolo Saga.
Thanks to his usage of the Pokopen Demonic ability, King Piccolo was able to "reincarnate" himself as Piccolo Jr. (ピッコロ・ジュニア, Pikkoro Junia).