Mercenaries are new to Diablo 4 in Vessel of Hatred. Here’s how to unlock them, a breakdown of each character.

With Diablo IV’s expansion, Vessel of Hatred, comes a new array of features, among them the new NPC buddy system, the Mercenary. Starting with Raheir, who you meet early on in your adventure into Nahantu,

Start the Season 6 Season of Hatred quest FIRST. Season 6 quests are marked in BLUE. This kicks off in Zarbzinet and will direct you to fight a Realmwalker. More info later on this but the reward gives you a consumable 'Seething Opals' that have an XP buff and stack with Elixirs and Incense. You can then use these during the campaign.