The exact details and characterizations of the Amatsu-Mikaboshi are very cloudy or unclear, as he (or it) is rarely if ever mentioned in any of the typically referenced texts of East Asian Mythology.
From what can be gleaned and pieced together from ancient Japanese myths, the Mikaboshi is not a physical god in the sense like Amaterasu or Susanoo, but a dark Force that existed before the universe, reigning alone in absolute darkness and control.
Something happened, however, and in one brief instance the iron control of the Dark Force of the Mikaboshi was shattered by the movement of In and Yo, which brought forth the Universe and the active chaos of life and movement, which later became the gods and humanity.
The solidity of the Primordial Darkness had been destroyed, but its residue still lingered on in the hearts of all beings and is allegedly the cause of human passions.
Powers and Stats
Tier: Low 2-C
Name: Amatsu Mikaboshi (天津甕星), The August Star of Heaven
Origin: Japanese Mythology
Gender: Likely Genderless, but referred to as male
Age: Older than Creation
Classification: Deity, Japanese God, Primordial Chaos, God of Darkness and Evil
Powers and Abilities: Immortality (Types 1, 2 and 4 at lest), Reality Warping, Darkness Manipulation, Life Manipulation, Death Manipulation, Soul Manipulation, Mind Manipulation, Matter Manipulation, Non-Corporeal, Possible Omnipresence.
Attack Potency: Universe level+ (Is the endless Chaos that existed before creation and an endless void of absolute darkness, an immeasurable force that controlled all before there was matter, time, life and light)
Lifting Strength: Immeasurable
Striking Strength: Unknown
Durability: Universe level+ (The spontaneous movement of In and Yo, which broke his absolute control and brought forth movement and energy, and the creation of matter, time, life and light by the Primordial Kami Amenominakanushi, did not destroy him)
Stamina: Likely Infinite
Standard Equipment: None notable.
Weaknesses: Possibly Light and Positive Energy.