Piccolo Daimao

Piccolo Daimao (ピッコロ大魔王, Pikkoro Daimaō), known as King Piccolo in the English dubs and Demon King Piccolo in the Viz manga, is the the evil half of the Namekian that removed his evil in order to become the guardian of the Earth; this negative energy took on a physical form, becoming a cast-off being. He and the good half, Kami, are linked, so if one dies, the other also will die. After being formed, he designates himself as the Great Demon King and begins to terrorize the world. He is eventually imprisoned by Mutaito, the master of Roshi, in a rice cooker for centuries by the suicidal Evil Containment Wave. After being released by Pilaf, he attempts to kill anyone that could possibly seal him again, uses the Dragon Balls to restore his youth, and takes over the Earth before being killed by Goku. Before dying, he regurgitates the egg containing his reincarnation, Piccolo Jr., in order to pursue his revenge. He is voiced by Takeshi Aono in Japan, Christopher Sabat in the Funimation dub, and Scott McNeil in the Ocean Group dub. He will be played by James Marsters in the upcoming live-action film Dragonball.

Besides Piccolo Jr., Piccolo Daimao creates several offspring in order to help him with his plans. His first offspring, Piano, helps Piccolo formulate his plan until his death. He also creates Tambourine to hunt down the contenders of the World Martial Arts Tournament to keep the sealing technique from resurfacing. Tambourine kills Krillin and beats a weakened Goku, but eventually is vaporized by Goku's Kamehameha. The third, Cymbal, is created to find Dragon Balls, but he is killed and eaten by Yajirobe. The fourth, Drum, is created to battle Tien, who he easily beats until Goku appears and kills him in one blow. He is voiced by Ryūsei Nakao in Japan and Dameon Clarke in the English dub.

Source: Wikipedia