Name: Fei Ming Xao
Title: Heaven's Wrathful Guard ('The Keykeeper')
Age: Eternal (Appears 24-26)
Gender: (Fe)Male
Hair: Raven-black; waist-length.
Eyes: Golden-Amber
Height: 168cm
Weight: 57.2kg
Race: Immortal
Powers/Weapons: Elongated nails, Staff of the Seven Temples; pure golden sun or pure icy moon beams. Staff powers.
Personality: Xao is duty oriented and loyal, she is very serious and mature- sometimes giving the impression that she's cold and distant. She is a brilliant and intelligent being with a commanding presence and bold, sharp tongue. Though responsible and wise, she is caring which occasionally leads her to being hesitant, cautious, and speculative at times.

History: Called Heaven's Wrathful Guard, or more simply (and mortal known) 'The Keykeeper'. Fei Ming Xao has been present since the birth of Yin and Yang (Balance), as the being that was appointed as the divine protector of the destructive twins. Though capable of being either male or female, Xao's preference is the latter due to the physical shape requiring less power to maintain. Her position is that of a guard/priestess over the Heaven's, governing the six astral temples of the elements as well as maintaining the safety of the seventh. Being Yin and Yang's caretaker, she oversaw many many of their decisions and upholds their sentiments and choices (within reason). She can only be released from this position of power by the twins themselves, should they speak her full real name (Fei Ming Xao), which would- in turn, turn her mortal. Xao contains the balanced 'Solunar' power within herself; granting her the abilities of the moon and the sun to shoot powerful and direct raybolts from her fingterips that are usually only used for stunning or temporarily pain. Her only weapon is the Staff of the Seven Temples; its special ability pulling power from all elements (her own included) as well as 'The Balance' in order to either totally remove memories, or completely lock an individual within the confines of time, outside of the usual flow.
Since Xing tricked Yin and Yang into becoming one, they lost their individual memories and became one being known as Maestro Hero (Hiro); due to this and his integration back into modern society, Xao has decided to take solid form (her natural form is that of a star) and watch over him and the other Wu Xing to make sure that despite his lack of memories, balance is maintained. This has caused her to become his guardian and remain close to him by any means necessary.