The Collector is a Pig Trader Mob exclusive to the Hamlet DLC. He is a pig in a trench coat who buys various animal loot and trinkets for three Oincs. There is no limit to the amount trades done in a day.
One Collector may spawn from a Town House, and will wander randomly around their house and eat any edible items left on the ground, including Pig Skin. Every so often they will drop one Manure where they are standing, and if the player picks up that manure the Collector will approach them and give them one Oinc, along with an accompanying Quote.
Whenever there is a hostile mob nearby, or a player targets them or another Pig Trader or Royal Guard near them, they will enter a panicked state. They will begin to move around semi-randomly in a direction away from the aggressor.
They will attempt to return to their house in the evening, and if they cannot reach their house or their house is destroyed they will seek the nearest light source and stand next to it until night, when they will sleep on the ground.