Day of week: Thursday
Planet: Nibiru
Human name:  Ochibano Negai
Senshi name: Sailor Nibiru
Other Alias: Nibiru, Lotus
Birthday: September 21
Age: Approximately 1200 (appears 19)
Astrological sign: Virgo
Blood Type:  AB+
Fav. color(s):  Brown
Hobbies: Praying, Walking, Meditating
Fav. food:  Herbal Tea
Least fav. food:  Any meat
Fav. school subject: Nibiran Religion, Nibiran History (Although she is out of "school", she continues to receive lessons from her teacher, Ambrosius.)
Least fav school subject: Computers (She takes night classes at a nearby university)
Has trouble with: Expressing her emotions
Fav. gemstone: Amber
Boyfriend/Girlfriend: No one
Best friend: Ambrosius
Birthstone: Sapphire
Fav. flower: Lotus
Fav. sport: Archery
Fav. animal:  Hawk
Home: Originally, the Kao Asteroid; currently, a studio apartment over a flower shop
Talent: Praying to trees
Family info: Her mother was the Chieftain of Nibiru, who was raped by a Youma during the attack on Nibiru.  She was disowned at birth and raised by Ambrosius
Magical items: A Nibiran amulet that allows for her transformation; A wooden quarter staff used in the "Forest Isolation" attack, as well as a combat weapon
Powers: Death of Autumn (causes the enemies weapons to turn to dust, does not work on blessed items, such as the Time Staff, Neptune's Mirror, Space Sword, etc.); Wood Gather (is a defensive tactic. When Nibiru's ungloved hands touch the ground, trees spring up and create a block, disappearing about ten minutes later); Forest Isolation (is the most deadly attack, where smoke comes out from Nibiru's quarter staff and causes the target to have the hallucination of being completely alone in a dense forest. This drives most opponents insane and they end up taking their own lives.)
Element: Wood/Forests
Major points in life: Her planet was completely destroyed a week after her birth; she was taken to Kao by Ambrosius, her master and mentor; Ambrosius took his own life to bestow longevity on her, and was reincarnated as a hawk; she traveled to earth.
History: Nibiru was the tenth planet of the solar system.  During the Silver Millennium, it's existence was doubted until Sailor Pluto was sent as an ambassador to it, at Serenity's orders.  She returned to report that Nibiru was a primitive planet, inhabited by tribal people who worshipped trees and led by a woman called Chieftain Nemesis.  Serenity and Pluto denied Nibiru entrance to the Silver Millennium, and even denied its existence for about ten years.  Then, an asteroid was discovered to be headed straight for Pluto.  Before anyone could do anything, it suddenly vanished.  Serenity herself went to Nibiru, and learned from a shaman named Ambrosius about how the trees had destroyed it at the people's request.  Serenity spoke to Nemesis, and considered bringing Nibiru into the Silver Millennium.  However, their primitive lifestyle did not fit with her enlightened kingdom, and she decided against it.  Nemesis was furious, and knew that Serenity would be her ruin.  Three decades later, the Dark Kingdom attacked Nibiru, and Nemesis was raped by a youma.  Ambrosius saved her and took her to a sacred grove, where she gave birth to a girl nine months later.  She tried to kill the baby, but Ambrosius stopped her.  Nemesis grew furious again, and told him to take the girl and go.  He took her to an asteroid called Kao, and raised her to be a fighter who would avenge Nibiru.  In honor, he named her after the planet.  She grew to be a strong, spiritual fighter.  Seeing that the Silver Millennium had fallen, and its inhabitants had been sent to the future, Ambrosius decided to give Nibiru longevity.  Although she would not be immortal, she would continue to exist in her exact state until she would die at the hand of herself or someone else.  In order to do this, he killed himself and gave her his life.  However, he was immediately reincarnated into the body of a Sacred Hawk, and continued to teach and guide Nibiru for the next thousand years.  When the time came, they prayed to the trees, and traveled to Earth.  Their goal:  Punish the Dark Kingdom for destroying Nibiru, and Punish the Silver Millennium for abandoning it.