In the X OVA, the character Nataku is an androgynous clone of extreme psychic ability, created in a laboratory from the genetic material of the deceased Kazuki Tojo, the granddaughter of the president of Tojo Pharmaceuticals, and her father Masaki Tojo. As a Dragon of Earth, Nataku is aligned with those who seek to destroy humanity in order to save the planet. Nataku is sent by the chairman of Tojo Pharmaceuticals to retrieve the Shinken, a sacred sword, with the chairman's intent being to destroy the blade so that Nataku cannot become entangled in the events of the Promised Day. During the attempt to steal the Shinken, Nataku mortally wounds Kyougo Monou, the father of Fuuma and Kotori, who was trying to protect the sword. Nataku is haunted by the lingering memories of its previous life as Kazuki, which creates a deep emotional conflict within the clone. These memories drive its motivations and actions, particularly its unquestioning loyalty to Fuuma Monou, because Fuuma physically resembles the person Kazuki cared for most in her life: her father, Masaki. Nataku follows Fuuma without question, seeing in him a surrogate father figure. The character's personality is defined by this inner turmoil between its artificial origin and the inherited human emotions and attachments from Kazuki. Nataku's role in the story is that of a powerful, tragic antagonist whose psychic abilities and clone nature make it a formidable force among the Dragons of Earth. The character experiences minimal development within the OVA itself, but its arc is rooted in the unresolved grief and longing from Kazuki's past, which shapes its behavior and ultimate fate. Notable abilities include extreme psychic powers, which are characteristic of its cloning origin and allow it to perform feats beyond normal human capacity.