We've loved every moment of our time in Sanctuary during the Diablo 4 review period, slaying countless followers of Lilith and the hordes of the Burning Hells, going all the way to level 72 during our time with the game since it would take about 150 hours to reach max level. Once you get there, a "pinnacle encounter" awaits, and many fans might be wondering who the final level 100 boss is.
Please note: This article contains spoilers, revealing the name of the final Diablo 4 boss encounter at level 100 below the image of Inarius. You've been warned.
Update on 14 June 2023: We've updated this article with the latest info on the final level 100 boss in Diablo 4.
Who is The Final Level 100 Diablo 4 Boss?

The final level 100 boss is not Diablo or one of the other Prime Evils. Some fans might have been hoping for a completely new boss as the "pinnacle encounter."
Pulling off the bandaid right now, the level 100 boss in Diablo 4 is the Echo of Lilith, aka (Uber Lilith) as revealed in-game once you complete the campaign and reach the endgame activities at around level 50. Check the image below for confirmation.

At the time of writing, it is unclear if there will be some quest chain attached to the Echo of Lilith encounter once you hit level 100 or how to unlock it. The only official mention of this endgame boss from associate game director Joe Piepiora reads:
At level 100, we do have a pinnacle boss encounter we want players to engage with that’s been balanced so that it’s extraordinarily, extraordinarily challenging. Players that reach level 100 are going to have an extremely difficult time on this boss encounter. And the expectation is that you take your class, you understand your build, you’ve maximized everything that you possibly can about it, and you really have learned encountered very well. And that’s going to be the way that you can maybe take it down.
Hopefully, the boss encounter will be unique, with many new mechanics and even a third phase. It does sound promising, but we can't help but wonder if Blizzard couldn't instead of made the final, level 100 boss a completely new character we did not fight during the campaign.
In case you missed it, check out the official Diablo 4 "story launch trailer" below.
So there you have it, the final, level 100 boss encounter in Diablo 4 is the Echo of Lilith. Stay tuned, as once we reach level 100, we will be bringing you all the details on the encounter, how to beat it, and if there are any requirements to unlock it.
For more Diablo 4, be sure to check out our dedicated section or some of our Guides & Tutorials just below:
Diablo 4 Class Builds - Best Barbarian Build | | Best Necromancer Build | Best Sorcerer Build | Best Druid Build | Best Rogue Build | All Classes Tier List | Best Class For Beginners | Build Calculator |
Class Mechanics: Sorcerer Enchantment System | Barbarian Arsenal | Rogue Specialization | Necromancer Book of the Dead | Druid Spirit Animals | Unlock Golems |
Items - Healing Vial | Item Slot Types | Transmogs/Wardrobe | Salvage Items | Durability & Repair | Trading Items | All Unique Items & Stats | Set Items | Item Quality/Rarity Levels | Elixirs | Butcher's Cleaver | Cry of Ashava Trophy |
Features: Beginners Guide | Impressions From Beta |
Quests: Ritual Tower Key | Forgive Me Side Quest | Traveler's Prayer Side Quest | Secret Of The Spring Riddle | Raising Spirits Side Quest | Woodsman Of Nevesk | Fiend Rose |
General D4 Guides: Legendary & Gold Farming | Town Portal | Inventory Size | Stash Size | Beat Lilith's Lament | Beat Den Mother Boss | Beat Lord Avitus Boss | Beat Blood Bishop Boss | Reset Dungeons | Gathering Legions Guide | The Butcher Boss | Leave Dungeons | All Stronghold Locations | Hardcore Mode | Change Difficulty | Unlock/Launch Time | Balance Changes | Patch Notes |
Diablo 4 Tech Guides - Ray Tracing Support | Couch Co-Op | Server Regions | PC Requirements & File Size | Diablo 4 Servers Down? | Connection Issues Fix | Crashing Issues Fix | Unable To Install or Patch | Low FPS Fix | Error Code 34202 Fix | Disable Fog & Glare | Stuck in Queue Fix | Console Issues | PC Issues | Enable & Disable Chat Bubbles | Hit Max Level Fast | Best PC Settings High FPS | Error Code 395002 Fix | Error Code 316719 Fix | D4 on Steam Deck | Offline Mode | DLSS 3 & NVIDIA Reflex |
Crafting/Vendors - Jeweler | Gambling & Obols | Occultist | Alchemist | Blacksmith | | Monster Parts | Skins | Ore | Plants |
Legendary Aspects - Codex of Power | Sorcerer Legendary Powers | Barbarian Legendary Powers | Rogue Legendary Powers | Necromancer Legendary Powers | Druid Legendary Powers
Activities - Strongholds | Nightmare Dungeons | Silent Chests | Altars of Lilith | Helltides | Endgame |
Story & Lore - Campaign Length | Who is Lilith? | Who is Inarius | Deckard Cain | Secret Cow Level | All D4 Acts Listed |
Zones - Fractured Peaks Overview | Scosglen | Kehjistan | Dry Steppes | Hawezar | All Waypoint Locations | Full World Map | Fractured Peaks Chests | Fractured Peaks Cellars |
Stronghold Guides - Kor Dragan | Malnok | Nostrava |
Mounts - Temptation Mount | Diablo 4 Class Dismount Mechanics | Unlock & Customize |
Seasons - Battle Pass Price | Diablo 4 Season Duration | Battle Pass Differences | Get Favor | Next Season Start Date | Season Blessings | Season Journey | Diablo 4 Content Roadmap |
Gameplay Systems - Armor System | Clans | Primary Stats & Effects | Shrines & Buffs | Renown & Reputation | Max Level & Paragon Cap | World Tier Difficulty Levels | Followers/Mercenaries |
World Bosses - Ashava | Avarice | Wandering Death | Beat Ashava | Ashava Spawn Location |
Diablo 4 Misc - Statue of Inarius Price & Specs | Wolf Pack Cosmetic | Codes | Diablo 4 Free-to-Play? | Mother's Inked Title | Collector's Edition | How To Respec | Stagger Mechanic | Patch Notes | Asmongold Diablo 4 Beta Thoughts | Item Shop | Wings of the Creator Emote |
Challenges/Achievements - Necromancer Challenges | Barbarian Challenges | Druid Challenges | Rogue Challenges | Sorcerer Challenges | Crafting Challenges
Diablo 4 PvP - Coming soon!
Our section keeps growing, so check for new guides daily! Don't forget to pick up one of the Diablo 4 Editions and join the fight to save Sanctuary soon.