Naraku was one of the Namekians born on Earth. Due to King Piccolo's influence in part of the Namekians' area of the planet, Naraku was born as a Namek of pure evil from the "Evil Egg", which was created by the evil in the Namekians' hearts. In Age 972, he led the Evil Namekian in a conflict on Earth.
Naraku's name comes from Naraku (奈落), one of the Japanese names for Hell as it is depicted in Buddhism.
A clothing set in Xenoverse and Xenoverse 2 appears to be base on Narakus outfit, it is explusive to Namekians.