Diablo 4 Lair Bosses Guide: Every Boss, Key and Hoard

Lair Bosses are the big repeatable boss fights of the Diablo 4 endgame. If you know them as Tormented Bosses or Uber bosses, you're in the right place: Varshan, Duriel, Andariel, Belial and the rest all live in this one system now.

This guide covers all ten of them in one place: which key each one wants, where those keys come from, what to watch for in every fight and how to pick the boss that drops the item you're after.

Hover over or tap an item name to see its tooltip. The cards show value ranges from the game data, so your own roll can differ.

Lair Bosses at a glance

Who: ten bosses in three tiers. Five Initiate bosses, four Greater bosses and Belial on top.
Difficulty: Torment I or higher.
The fight: free. You start it at the altar in the boss's lair, as often as you like.
The loot: a personal Hoard appears after the kill. It opens for 1 key of the boss's tier, and every player pays for their own.
The keys: Lair Key for Initiate bosses, Greater Lair Key for Greater bosses, Superior Lair Key for Belial.
Expansion bosses: Urivar and Harbinger of Hatred need Vessel of Hatred. Everyone else is in the base game.

Every Lair Boss and its key

The key decides what a boss costs you. One key opens one Hoard, and the tier tells you how tough the fight is and which key the Hoard asks for:

Boss	Tier	Needs	Key for your Hoard
Varshan	Initiate	Base game	1 Lair Key
Grigoire	Initiate	Base game	1 Lair Key
Beast in the Ice	Initiate	Base game	1 Lair Key
Lord Zir	Initiate	Base game	1 Lair Key
Urivar	Initiate	Vessel of Hatred	1 Lair Key
Duriel	Greater	Base game	1 Greater Lair Key
Andariel	Greater	Base game	1 Greater Lair Key
The Butcher	Greater	Base game	1 Greater Lair Key
Harbinger of Hatred	Greater	Vessel of Hatred	1 Greater Lair Key
Belial, Lord of Lies	Exalted	Base game	1 Superior Lair Key

These costs match the community key tables for Season 15. Before a long session, hover over the lair on your map: the tooltip names the key that boss wants and how many of them you carry.

How a Lair Boss run works

Switch to Torment I or higher. Lair Bosses stay locked below it. Torment is unlocked separately, so reaching level 70 alone doesn't mean you can enter.
Find the lair on the map; Boss Lairs carry their own icon. Once you've discovered one, you can teleport straight to it.
Check the map tooltip. It shows the boss, the key its Hoard takes and how many of those you hold.
Use the altar and fight. Starting the fight costs no key and no materials.
After the kill, a Hoard appears. Spend one key to open it and collect the real loot.

The kill alone gives you very little. The rewards sit inside the Hoard, and that Hoard belongs to you alone. In a group, a friend's key does nothing for your chest, so a party of four needs four keys for four Hoards. Wait until everyone has looted before you start the next run.

Because the fight is free, you can learn any boss without paying a thing. Fight it a few times, leave the Hoard closed, and come back with keys once the pattern feels easy.

Where the keys come from

The three keys form a ladder. Each tier's Hoards feed the next one up:

Key	Where you get it	What it opens
Lair Key	Everyday endgame: Helltide chests, Whisper Caches, World Bosses, Legion Events and, with Lord of Hatred, War Plans	The Hoard of an Initiate boss
Greater Lair Key	The Hoards of the Initiate bosses	The Hoard of Duriel, Andariel, The Butcher or Harbinger of Hatred
Superior Lair Key	A smaller Belial who can ambush you right after you open the Hoard of another Lair Boss	Belial's Hoard

The dependable route is: Lair Keys from your usual activities, then Initiate bosses for Greater Lair Keys, then the Greater bosses. Every Hoard you open along the way gives Belial a chance to show up. The ambush doesn't come every time, and it only pays the players who opened the Hoard that drew him in. Our Belial guide covers both fights.

Nobody has published fixed drop rates for these keys, so count what you really have before you plan a long run. Some guides name extra sources, for example Nightmare Dungeon rewards, but we found no source that drops keys there every time.

What about Living Steel, Distilled Fear and the other boss materials?

Older guides list a different material for every boss: Living Steel for Grigoire, Distilled Fear for the Beast in the Ice, Shard of Agony for Duriel, Pincushioned Doll for Andariel and so on. None of them opens a Hoard today. Bosses still drop them as trophies, and guides describe Horadric Cube recipes for some of them. The Cube needs Lord of Hatred. You can farm every Lair Boss without them.

The bosses one by one

Each Lair Boss has a few attacks you learn to read. Here is the main danger per boss, from what players and guide writers describe; Blizzard doesn't publish a boss manual.

Initiate bosses

Boss	Main danger	What to do
Varshan	Waves of adds and pools on the floor	Clear the adds quickly and don't fight inside the pools
Grigoire	Lightning: charged floor squares, blast circles and beams between pylons	Step off charged squares at once and stay out of the lines between pylons
Beast in the Ice	Cold that chills and freezes, plus an ice storm across the arena	Find the safe lane in the storm instead of running in circles
Lord Zir	Dashes, life drain and growing blood pools	Leave every blood pool right away, it only gets bigger
Urivar	We haven't verified his current attacks. Learn him on a low Torment first, the fight is free.

Varshan, a pale chained demon with long hair, spreads his arms in his lair in Diablo 4 — Varshan, one of the five Initiate bosses. Image: Blizzard Entertainment

Grigoire, the Galvanic Saint, in golden armor with a lightning staff in Diablo 4 — Grigoire, the Galvanic Saint. Bring lightning resistance. Image: Blizzard Entertainment

The Beast in the Ice, a winged ice demon raising a frozen blade in its dark arena in Diablo 4 — The Beast in the Ice. Cold damage and freeze are its whole game. Image: Blizzard Entertainment

Lord Zir, a crowned vampire with bat wings, bares his fangs in Diablo 4 — Lord Zir, the vampire lord. Watch the floor for blood. Image: Blizzard Entertainment

Greater bosses

Boss	Main danger	Full guide
Duriel	Poison pools, a grab in front of him and burrows that bring maggots	Duriel guide
Andariel	Effigies of Anguish inside shields while beams sweep the arena	Andariel guide
The Butcher	Not covered here yet. Treat him like any new boss and learn him on a low Torment.
Harbinger of Hatred	Not covered here yet. Needs Vessel of Hatred.

Belial, the Exalted boss

Belial sits alone at the top. His palace fight is mostly about poison, and floating eyes that stay dark mark the safe lanes. In his Hoard you pick which other boss's item pool your loot comes from. That makes him the most flexible farm, but his Superior Lair Key is also the hardest to collect. Details in our Belial guide.

Before any Lair Boss

Resistances: check the boss's element first. Grigoire hits with lightning, the Beast with cold, Duriel and Belial with poison.
Movement: keep a dash, leap or teleport free for the moment two hazards overlap.
Stagger window: your hits fill a stagger bar. When it's full, the boss stands still for a moment. Save your biggest skills for it.
Learn first, pay later: every fight is free. Practice on a low Torment and only bring keys once you win cleanly.

What Lair Bosses drop and which one to farm

Every Lair Boss has its own Unique pool: a fixed list with a few items for all classes and a few for each class. The targeted Uniques from a Hoard come from that list, so you pick the boss by the item you need. Higher Torment gives better item quality.

Two targets per boss, checked against the Season 15 tables on October 6, 2026. Each boss's full pool is longer.

Varshan

Target	Class / pool
	Barbarian
	Shared pool

Grigoire

Target	Class / pool
	Shared pool
	Barbarian

Beast in the Ice

Target	Class / pool
	Necromancer
	Sorcerer

Lord Zir

Target	Class / pool
	Necromancer
	Rogue

Urivar

Target	Class / pool
	Shared pool
	Rogue

Duriel

Target	Class / pool
	Shared pool
	Sorcerer

Andariel

Target	Class / pool
	Shared pool
	Necromancer

The Butcher

Target	Class / pool
	Shared pool
	Rogue

Harbinger of Hatred

Target	Class / pool
	Shared pool
	Sorcerer

Belial (choose a pool)

Choose Andariel's pool for or Duriel's for . Belial has no separate target list.

Target	Class / pool
	Shared pool
	Shared pool

OP.GG and D4Guides list for Varshan, while Icy Veins lists there as well as under Bartuc; neither item is included in this agreed target selection.

Not sure which boss holds your item? Our Unique Items guide has a boss loot table with more targets. Belial is the shortcut: his Hoard lets you choose any of these pools.

Mythic Uniques

Since Season 15, a Mythic from a Lair Boss Hoard comes from that boss's own pool. With Belial, it follows the pool you picked. Each boss also drops ordinary random loot, and that side loot can still roll any Mythic.

Blizzard raised the Mythic chance this season: Initiate bosses now match the Greater ones, and Greater bosses and Belial went up too. No odds were published, and no kill promises a Mythic. Only Echo of Mephisto promises one, and he isn't a Lair Boss: he is a separate pinnacle fight that takes Crux of the False Prophet and the Lord of Hatred expansion.

This season: the Splinter of Destruction

In Season 15 you pick one Splinter of Evil. Baal's Splinter of Destruction ties its bonuses to Lair Bosses and the Undercity, so it suits players who spend most of their time on bosses. How the Splinters work is in our Season 15 guide.

Farm smarter

Pick the item, then the boss. Find which pool holds your target before you spend a single key.
Never skip Initiate Hoards. They pay for your Greater keys and can pull Belial in for Superior keys.
Fast kills beat high Torment. A Torment you clear without deaths opens more Hoards per hour.
Group up with keys. Everyone needs their own, but shared kills go faster.
Hold on to boss trophies. They don't open Hoards, but they stack up and some have Cube uses.

Quick plan for a Lair Boss farm

Pick the Unique your build is missing and the boss whose pool holds it.
Collect Lair Keys from Helltide, Whisper Caches, World Bosses, Legion Events and War Plans.
Run Initiate bosses and open their Hoards for Greater Lair Keys. Beat Belial whenever he ambushes you.
Check your build for resistance against the boss's element, a free movement skill and strong single-target damage.
Teleport to the lair from the map, on a Torment where you don't die.
Fight, open your Hoard and compare every Unique, then repeat while your keys last.

Conclusion

Lair Bosses are simple once the ladder clicks: the fight is free, the Hoard costs one key of the boss's tier, and each tier's Hoards fund the next. Pick your boss by its pool, learn the fight on a low Torment and keep opening Initiate Hoards so the Greater keys keep coming.

Short on time or keys? Our Diablo 4 Boss Runs cover every Lair Boss. Rather fight them yourself? Stock up on Diablo 4 lair keys and open more Hoards per session.

FAQ

What happened to Tormented Bosses in Diablo 4?

They are Lair Bosses now. Varshan, Duriel, Andariel and the others are the same bosses, but you fight them for free and only spend a key on the Hoard after the kill.

How do I summon a Lair Boss?

Set Torment I or higher, teleport to the lair from your map and use the altar inside. Starting the fight costs no key and no materials, so you can repeat it as often as you like.

Which key does each Lair Boss need?

Varshan, Grigoire, Beast in the Ice, Lord Zir and Urivar take 1 Lair Key. Duriel, Andariel, The Butcher and Harbinger of Hatred take 1 Greater Lair Key. Belial takes 1 Superior Lair Key.

Where do I get Lair Keys?

From everyday endgame: Helltide chests, Whisper Caches, World Bosses, Legion Events and, with the Lord of Hatred expansion, War Plans.

How do I get Greater Lair Keys?

Open the Hoards of the Initiate bosses: Varshan, Grigoire, Beast in the Ice, Lord Zir and Urivar. Those Hoards take ordinary Lair Keys.

How do I get Superior Lair Keys for Belial?

When you open the Hoard of another Lair Boss, a smaller Belial can ambush you. Beat him and he can drop Superior Lair Keys. Only players who opened that Hoard get the reward, and the ambush doesn't come every time.

Do I need my own key in a group?

Yes. Every player opens a personal Hoard with their own key. A friend's key does nothing for your chest.

Do Lair Bosses drop Mythic Uniques?

They can. Since Season 15 a Mythic from a Hoard comes from that boss's own pool, and random side loot can still roll any Mythic. Blizzard raised the chances but published no odds, so no kill guarantees one.

Which Lair Bosses need an expansion?

Urivar and Harbinger of Hatred need Vessel of Hatred. The other eight are in the base game. The Horadric Cube recipes for boss trophies need Lord of Hatred.