Demons can be found beginning from level 2. Every race of warlock, no matter his choices of abilities in, will surely have 4 minions at all times accessible at your bidding.

Notice that all Demons other than the Imp Require a Soul Shard, that will be provided through your use of the ability 'Drain Soul' when a mob is near dying (Targets should be underneath your effect of Drain soul after they die so that you can obtain a Soul Shard). Additionally be aware, these same shards can usually only be taken from targets which offer you Honor (PVP) or Experience points (PvE).

the Imp (Available at Level two): This dude does nice injury until you can get the Void Walker. It provides good group utility due to Blood Pact, which will increase the party’s health to a certain number. He is also Extremely nice for in case you are Affliction because he has a seemingly never-ending mana pool which you could take mana from.

your Void Walker (Available at level 10 after finishing a quest specifically for your Warlock class): your VW, or Blueberry as people like to name it, is fantastic at ten-40 or 50 IF you are demonology (it’s not too bad in affliction, but once you acquire Dark Pact in affliction, it's best to make use of the Imp and Succubus). This pet is your warlock’s ‘Meat shield,’ very true at level ten-thirty . He has good aggro generation, which implies he can take all of the harm for you. He can solo a few targets at the same time typically if you are under pressure.

your Succubus (Accessible at level 20 after completing a quest specifically for the Warlock class): your Succy, as people name it, might be one of the best raw damage demon (only actually true from 20-50 or so). In case you are affliction, you need to use this sexy demon when you drain tank the target. Ensure that all of its talents are turned off (by right clicking them) and it will not exhaust any of its mana.

the Fel Hunter (Accessible at level 30 upon completing a Warlock particular quest): This puppy (Fel pup as people name it) is our PvP pet. It can dispel spell buffs (one from you or one from your mob), spell lock enemies, and provide a spirit and intellect increase for your group. He is often used in high end raiding affliction specs because of his damage dealing capacity that increases when you might have more debuffs on your target. Not one of the best leveling pet, but may be really helpful you probably have it summoned whereas on a PvP realm.

your Felguard (Level 50 Demonology Talent, requires forty talents in Demonology): This is the massive cause why folks say Demonology is better than affliction. This minion provides an amazing amount of dps and can tank common enemies fairly nicely whereas questing. This is THE minion to nearly always have summoned in the event you go 41 points into the demonology talent tree.

Infernal and Doomguard: Each of those, when it comes to leveling, are comparatively useless. For those who acquire in hassle, at level fifty, you'll be able to use the Infernal at every twenty mins Cool Down. This guy hits fairly painfully and may definitely shock somebody who might assault you if you're in a Bg or in a PvP server. A nice change to things every once in a while. your Doomguard will be summoned by chance of the Curse of Doom spell (solely useable on PvE targets). He may also be used when you acquire your spell in the Blasted Lands (If I recall).