Peanutbutter is a rare forest spirit that takes form of an ox with koi-like and human-like aspects. Often these forest spirits are used for labour by humans, but when free, they are much like unicorns; protecting their woodland and fields with the fiercest form of protection.
They, however, are not much smarter than a human. They have a fundemental understanding of life and how to protect and let it flourish, but outside of that, they often have to learn through experience.

Peanutbutter was previously a japanse labour animal, but ultimately was freed by a boy from the village in which he resided. Now he wanders the nearby forest where he ensures those kind of heart are protected on their journey.
Peanutbutter is also somewhat insecure of his actions and tends to avoid interaction or being spotted because of his previous expriences.