The Original Diclonii were the first horned people on Earth in the Elfen Lied series. According to Chief Kakuzawa of The National Institute On Human Evolution, his family was descended from a separate species of Hominid that once thrived in feudal Japan. This species was marked off by horn-like protrusions atop their foreheads and supposedly, psychokinetic abilities that inspired the legends of demons and gods. Being outwardly very different from the Homo Sapiens (modern humans), they were hunted and discriminated against by the human race with the intentions to exterminate them. Stories passed down to him stated that they were powerful people who were strong enough to 'cut through mountains.'