Merchants are interactable NPCs in V Rising that can sell rare and exclusive items in exchange for Silver Coins. These NPC vendors can be killed and respawn like V Blood Carriers; however, players cannot do business with these characters until they’ve unlocked a Vampire Power known as Human Form. Human Form is an ability that allows V Rising Vampires to transform into a hooded humanoid, disguising their true appearance as a bloodthirsty fiend. With this power active, players can approach any Merchant and make purchases without worries of aggression.
https://screenrant.com/v-rising-every-trader-merchant-location-guide/