“Come on, people! You can name your price for this fine creature! Give it a couple weeks and it will be a big, bad killing machine!!”— Slaver
The enslaved yao guai, later renamed by the player or given the default name Pet, is a young yao guai being sold at the black markets in Fallout 4.
This yao guai was bred by a merchant family, known for raising yao guai and for selective breeding. The yao guai was with a caravan that was attacked by raiders. All the merchants were killed and the yao guai was thrown in a cage as a joke, but then later sold to slavers.
Upon talking with the slaver selling yao guai, the player can choose to either compete with another buyer for a price, secretly set the yao guai loose, or kill the other buyer for a lower price. If bought, the yao guai will stay in a cage in your home for a few game days. One can interact with it in a few ways, both good and bad, such as giving it snacks, attacking it, letting it out of the cage, etc. If left in the cage, there's a chance of finding it broke out if your gone for a long period, in which case it will be missing.
If it grows up while living you, it will no longer fit in the cage and, if nice to it, it will follow as a companion. If cruel to it, you will have to get a special collar to force it to follow you. In which case, it will act like a normal companion, except if the collar is crippled in combat, it will frenzy and attack you.
If the player set the yao guai free without buying it or if the yao guai broke out of your home, it will randomly appear near the player. If the player was nice, or set it loose, it will still follow them as a companion. Otherwise, if cruel, it will be hostile and attack on sight, sometimes with other yao guai.
Unlike normal characters, this yao guai does not level with the player. Rather, it levels depending on how long sense bought or freed. Once it starts following the character, it is at level 1. Every week after that, it levels up, increasing its health, damage threshold and damage. The only exception is if it broke out of its cage and is hostile, in which case it will be between levels 3 and 6, depending on the player's level.
Enslaved yao guai sometimes has trouble going through doors as it ages. As a result, it will lay down and wait outside these doors, unless it senses an enemy. It will however still follow the player if they go into a new area.
Enslaved yao guai only appears in the Fallout 4 I made up.