Updated Nov 8, 2026
Which warlock demon to use in WoW Forever: Imp, Voidwalker, Succubus or Felhunter
The demon is the Warlock's most important choice while leveling. WoW Forever keeps the four classic demons, adds the Incubus, and the Nov 2 changes gave demons more health. Here is when you get each one, what it does and which to use in every situation.

The short answer
Use the Voidwalker to level and for any dangerous fight, and the Succubus when you want to kill faster. The Voidwalker takes the hits and lets you cast safely. The Succubus deals more damage but is fragile, so it suits the fights that you already control. Take the Felhunter for PvP and against casters, and the Imp in groups for its party buff.
You will not stick to one demon: many players keep the Voidwalker as the default, swap to the Succubus or Incubus for easy stretches, and summon the Felhunter when casters are in the way.
Summon Imp
Summon Voidwalker
Summon Succubus
Summon Incubus
Summon Felhunter
When you get each demon
The Imp comes at level 1 with a class quest. The Voidwalker arrives at level 10, the Succubus and the Incubus at level 20 and the Felhunter at level 30, each one with its own class quest. At level 40 you learn Summon Felsteed, and at 60 Summon Dreadsteed.
At level 20 you also learn Ritual of Summoning, so keep a few soul shards for it, and in WoW Forever the level 60 trainer visit is the biggest, so save gold for it.
Summon Felsteed
Summon Dreadsteed
Ritual of Summoning
Imp: damage and a group buff
The Imp attacks from a distance with Firebolt and is the only demon that brings a buff for the group: Blood Pact raises the Stamina of everyone in your party. Fire Shield damages the enemies that hit its target, and Phase Shift makes it untargetable so it survives.
It is fragile and a poor tank, so it is the demon of the first levels and of groups that value the Stamina buff. For solo play you will swap to the Voidwalker as soon as you can.
Firebolt
Blood Pact
Fire Shield
Phase Shift
Voidwalker: the tank for solo play
The Voidwalker is the safest demon and the default for leveling. Torment makes enemies attack it, Suffering does the same to every enemy around it, which is ideal when you pull two or three mobs, and Consume Shadows heals it between fights.
Its Sacrifice spends the demon to give you a shield that absorbs damage and stops damage from interrupting your spells. With a Voidwalker holding the target, your damage over time spells and Drain Life do their job without you taking damage.
Torment
Suffering
Consume Shadows
Sacrifice
Succubus and Incubus: the damage demons
From level 20 the Succubus or the Incubus is the damage pick: Lash of Pain is an instant Shadow attack that hits hard, and the demon is best for killing one enemy at a time. Seduction takes a humanoid out of the fight for a few seconds, and Soothing Kiss makes the enemy less likely to attack it.
Both are fragile, so they do not suit long pulls. Use them while you are leveling when you fight one enemy at a time, or when you want to finish fast and your health and mana are in good shape. In dungeons a Voidwalker or Felhunter is usually safer.
Lash of Pain
Seduction
Soothing Kiss
Felhunter: casters and PvP
The Felhunter arrives at level 30 and is the utility demon. Spell Lock counters a spell and silences the caster, Devour Magic removes magic effects from an enemy or from a friend and heals the Felhunter, and Tainted Blood weakens the enemies that hit it in melee. Paranoia helps your party detect stealthy enemies.
It shines in PvP and against enemy casters, and it is a solid second choice for questing when you do not want to lose the Voidwalker's tanking: it takes hits reasonably well and keeps you alive with Devour Magic.
Spell Lock
Devour Magic
Tainted Blood
Paranoia
Keeping your demon alive and the demon talents
Health Funnel spends your health to heal the demon while you channel, with reduced threat. Learn to use it between fights, not during them. In WoW Forever demons receive 2 health per point of your Stamina, so gear with Stamina makes them sturdier.
Demonology has three talents that change how you play: Fel Domination makes your next summon faster and cheaper, Soul Link makes the demon absorb part of the damage you take, and Demonic Sacrifice spends your demon for a bonus that depends on which one it was. With a sacrifice you play without a pet, so it suits specific builds, not leveling. Subjugate Demon (the old Enslave Demon) lets you control a demon of your level or lower for a while.
Health Funnel
Fel Domination
Soul Link
Demonic Sacrifice
Subjugate Demon
Which demon for which situation
Leveling solo: Voidwalker by default; Succubus or Incubus for fights you already control. Affliction leans on the Voidwalker, because your damage over time spells need time. Dungeons: Voidwalker or Felhunter, and an Imp if the group values the Stamina buff. PvP: Felhunter for Spell Lock, Succubus for Seduction.
For the best talent build and race, see the guides on the best solo class and the leveling guide, and for what to put in your bags, the professions by class.