[Mysticism + secret identity + no romance + invincible]
Should gods have feelings? They probably should! But this god didn't seem to have any at first. She was born with the universe. Though she first took the form of a woman, she had none of a woman's gentleness. Her heart and body were cold. When she first came into being, there were no humans, only countless planets and universes. Her daily life consisted of keeping order among them. Humans appeared several billion years after her birth, and because they looked like her, she grew somewhat more interested in these creatures.