The Diablo 4: Vessel of Hatred expansion adds a new mechanic to the game, Mercenaries. These are NPCs that accompany you in combat throughout Sanctuary and each have their own particular set of skills.
The Diablo 4 Mercenaries differ from previous games iterations of this mechanic, as you can actually have two of them equipped at once. A primary Mercenary to aid directly and a secondary to act as a Reinforcement. Additionally you can build Rapport with your Mercenaries and trade with them.
Here's everything you need to know about these new characters in Diablo 4 and how you unlock each.
