Piccolo (ピッコロ Pikkoro) is a fictional character the Dragon Ball manga, authored by Akira Toriyama. Piccolo was first introduced as the reincarnation of the evil Piccolo Daimao in Chapter #167. The Tenkaichi Budokai Disturbance (波乱の天下一武道会Haran no Tenkaichi Budōkai) first published in Weekly Shonen Jump magazine on April 4, 1988, making him a demon and arch rival of the primary protagonist, Son Goku. However, it is later revealed that he is from the race of alien beings called Namekians. Piccolo is usually referred to as male, but as he is Namekian he is technically genderless. After Goku defeats Piccolo, Piccolo decides to team up with Goku and his friends in order to beat newer, more dangerous threats. He also trains Goku's first child Son Gohan, and they form a stronger bond, with Piccolo even going to sacrifice himself for his only friend.