Belial, Lord of Lies Boss Guide

Crushing Slam

Belial, Lord of Lies slams his fist into the ground and swipes it across the entire platform, dealing high damage and knocking players back.

• Watch for the animation as this can overlap with other deadly mechanics.

Toxic Breath

Belial, Lord of Lies prepares himself briefly before using a frontal beam from one side of the platform to the other and it deals devastating damage.

• Make sure to stand on the opposite side of where the breath starts unless you can teleport over it to avoid the damage.

Poisonous Pools

Pools of Poison spawn underneath Belial, Lord of Lies' fists, and the player, dealing moderate damage over time while standing within its area of effect.

• Be aware of the permanent Poisonous Pools as Poisonous Waves appear from them.
• The small pools underneath the players despawn immediately after detonating.

Poisonous Waves

Waves emerge from the Poisonous Pools, going left and right from the pools. These waves deal a large amount of damage.

• Plan your movement to ensure you are in a safe location before the waves arrive.

Eye Beams

Belial, Lord of Lies spawns multiple eyeballs facing different directions. After a brief moment, the eyeballs looking toward the platform create void zones in their line of sight, dealing significant damage over time.

• This can overlap with Belial, Lord of Lies' other abilities, causing nasty combinations. Make sure to stand in an area where the eyeball is facing away from the platform.

Each Boss has a different loot table of Uniques and cosmetic item(s), with a chance of dropping the highly sought-after Mythic Unique items. How loot is distributed and rewarded has been changed with Season 8, and is now tied to using the Boss Lair Keys.

To receive loot, you must use 2x Betrayer's Husk to open the Hoard. You get these from killing the Ambush encounter version of Belial. The Hoard has 2 Unique items in Torment 1, granting one extra for each Torment difficulty increase, and 2 extra for Torment 4. You are guaranteed one boss-specific Unique when you open a Hoard. You can increase this by 1 for doing Torment 3 or higher, and another 1 for being in a party. While in a party, you have a 33% chance of getting 1 additional class-specific item per party member.

Unique to Belial, Lord of Lies is that he does not have a loot table. Instead, you get to modify the loot that will drop from him when you open the Hoard. The options available are each of the bosses from the Boss Ladder. This Hoard will also contain one guaranteed Ancestral Unique item. Use our Boss Cheat Sheet to see what loot you can get from the different bosses.

On rare occasions, Belial, Lord of Lies ambushes you after defeating the other Boss Lair encounters in Diablo 4. This is an entirely different encounter compared to its Boss Lair counterpart. After defeating a Boss, a timer starts, and once finished, there is a chance for Belial, Lord of Lies to spawn.

Upon Belial, Lord of Lies' defeat, the loot available from the previous fight will drop as well as Betrayer's Husk, which is required to loot the normal version of the encounter.

Detonating Crystal

Belial, Lord of Lies spawns 1-2 crystals slowly moving toward the player. After 4 seconds, the crystals detonate where they are, dealing massive damage.

• At 3 seconds, dash or run out of the circle.

Deception

Belial, Lord of Lies creates a decoy of himself, using the same abilities as the real version.

• This decoy is much weaker and can be killed with only a few hits.

Poisonous Blast

Belial, Lord of Lies attacks with a frontal blast, dealing Poison damage in a straight line.

• The decoy also uses this ability.

Arena of Deceit

Belial, Lord of Lies traps the player within a deadly circle and summons multiple decoys that frequently mimic his attacks, aiming to overwhelm the player.

• Make sure to stay mobile during this phase and focus on avoiding mechanics.

Acid Rain

Belial, Lord of Lies launches poisonous blobs into the sky, which land in random nearby areas and deal moderate damage. Nangari adds have a chance to spawn from where the blobs land on the ground.

• Make sure to stay mobile during this phase and focus on avoiding mechanics.