Onuna, Goddess of Tranquility

Not all peace should be accepted without fear.

— A saying in Varios

Onuna is the goddess of tranquility, one of the myriad members of the pantheon of the Gods of Varios. Do not mistake her seemingly innocent chosen path deceive you as to the kind of deity she is: cruel and vindictive and utterly fanatic in her devotion to her own realization of how she sees her path.
The Tranquil Delve is one of many stories about her that serve to illustrate the point of the person that she intends to be. She savors it, how calm and forcefully peaceful people around her must be for fear of raising her ire.
It's not that she's that much more powerful than any of the other gods and goddesses, either, but the sphere she has chosen is so oddly unique that none of them have much authority around her, no way to skirt her commands or alter or argue until the hapless person has gotten away. She very carefully stands herself alone, so that she may be unquestionable in her statutes.
She will readily kill those who get in the way of her goal to achieve tranquility, and never mind how much chaos that death might create. That is all the fault of those lesser beings anyway, to her mind, and the thought that it might be her own responsibility for slaughtering their leader in front of her never occurs to her. Her own tranquility is perfection, and as such they cannot be worth her attention.
She does not seek to actively wipe out all other life, but what she does actually intend to do with them is rather difficult to distinguish.