Kuranpu

[ImmunityBow]

Why don't I shorten the convenient list Cyndadile made? Some of them aren't as generic:

A perfect balance of light and dark, KURANPU ensures that the world stays in perfect sync. The POKEMON stands as the mediator of all disputes.

In order to keep its own emotions in balance, KURANPU radiates hostile or benevolent feelings. Those who have been near KURANPU are said to experience mood swings.

KURANPU is said to have flown here from the moon, where it was born. As the moon moves through its phases, KURANPU's body becomes darker or lighter.

KURANPU is rumored to be able to mediate any dispute. It has the ability to affect the minds of people and POKEMON to make them more or less aggressive to suit its desires.

The belief that KURANPU is the greatest mediator of all lies in the rumours of its split personality. Its darker, tranquil side and its lighter, aggressive side are thought to be used in different situations.

It is believed that KURANPU's personality will shift to reflect one that it meets. Philosophers have long searched for it, believing it holds the key to understanding the human race.

That would be my shortlist (though perhaps I unfairly judged my own to be fine since I wouldn't have posted them up if I hadn't thought them viable in the first place).
For ones that had a sentence that was interesting and another that didn't work, I bolded the sentence that didn't work.
I also eliminated some in favour of one that was similar but better worded IMO.