The best Dungeons & Dragons adventures are inspired by the actions of powerful villains. The average Dungeons & Dragons game is built around the concept of the power of each individual party member growing with each new encounter, which means that you need sufficiently powerful enemies to rise up and challenge the players.

The villains that have appeared in the official Dungeons & Dragons adventures have had a lot of care to put into their design, as there is no more satisfying way to end a campaign than with a battle against an opponent who has defied you throughout the whole story.

There have been a number of excellent villains who have filled this role over the years, but only the best ones have provided a true challenge to the player.

It's possible to encounter all of these villains within official Dungeons & Dragons adventures and campaigns.

As such, we should warn you that there will be end boss spoilers for the following adventures: Bastion of Broken Souls, City by the Silt Sea, Night Below, Out of the Abyss, Prince of Undeath, Queen of the Spiders, Return to the Temple of Elemental Evil, The Temple of Elemental Evil, The Apocalypse Stone, Throne of the Bloodstone, Tomb of Horrors, When Black Roses Blooms. Valley of Dust and Fire, and Vecna Lives. 

We are here today to rank the most powerful villains that you can encounter in the official Dungeons & Dragons adventures.

From the ruler of the original Demiplane of Dread to the lone dragon who stalks the world of Athas, here are the 15 Most Powerful Dungeons & Dragons Villains, Ranked!

Count Strahd Von Zarovich

Count Strahd von Zarovich has appeared in more adventures than any other villain on this list. He is so popular that an entire Dungeons & Dragons setting was based on the original adventure where you first ventured into his castle.

The Ravenloft setting is made up of several different planes that are each ruled by a powerful Darklord, who are all based on creatures from gothic horror stories.

Ravenloft was inspired by the adventure module of the same name, where the players had to explore the haunted realm of Barovia, before facing Strahd in a climactic showdown at Castle Ravenloft.

If this list was about the most iconic or important Dungeons & Dragons villain, then Strahd would almost certainly have taken the top spot.

In terms of his effectiveness in battle, though, Strahd leaves a lot to be desired.

The fact that he is a vampire means that there are numerous methods by which Strahd can be defeated, which is to say nothing of the powerful anti-zombie abilities that are available to certain Dungeons & Dragons classes.

Strahd may have the power of an entire realm at his disposal, but he can be taken down a lot easier than the other villains on this list.

Imix & Maliskra

Return to the Temple of Elemental Evil was the first major campaign released for the third edition of Dungeons & Dragons. The story concluded with the party traveling to the titular temple and fighting through hordes of Tharizdun's most powerful servants.

The party then has to travel to the Elemental Plane of Fire, where they must fight off hordes of demons and zombies, before reaching the throne room of Imix, one of the four Princes of Elemental Evil.

Imix is a colossal-sized fire creature, who wields a sword that is likely bigger than the entire party put together.

He is joined by Maliskra: a powerful cleric of Tharizdun who also happens to be a half medusa/half fire elemental.

Maliskra has a range of powerful abilities at her disposal, such as her spell-like abilities and her gaze, but her true strength lies in the fact that she wields the Orb of Oblivion, which is a powerful major artifact that offers its host an abundance of magical powers and protections.

The final battle of Return to the Temple of Elemental Evil is one big endurance test, as the players journey through the Fire Node and have to face off against swarms of enemies, while the very air around them will scar their lungs if they don't take the necessary precautions.

The last battle is an explosive match against one of the most troublesome duos in Dungeons & Dragons history.

Darlakanand

It's possible for any Dungeons & Dragons battle to go sour if the dice turn against you. A few fumbles on the side of the party, followed by a few critical hits on behalf of the enemy can turn even a gang of goblins into a threat.

There are some character classes and monsters that thrive on moments of chaos, such as the wild mage, as their powers have a random element that can either turn the tide or condemn the party to an early grave.

This isn't the kind of tactic you would usually employ for an end boss battle, but that's what the players will face at the end of the epic Night Below campaign.

The final challenge that the players will face in Night Below is a battle against an incredibly powerful derro enchanter, named Darlakanand, who possesses the magical abilities of an eighteenth level mage.

Darlakanand starts the battle with a time stop spell, which will give him a chance to summon a few creatures and rant at the party about his amazing plans.

The players will then have to survive a barrage of powerful spells that are designed to ensnare their minds and turn them against one another, such as feeblemind and Otto's irresistible dance, before they will have a chance to take Darlakanand on in battle.

Lord Soth

Lord Soth was a death knight from the Dragonlance setting, who later became one of the Darklords of Ravenloft, before returning to his homeland.

Lord Soth was a knight of Solamnia, who was turned into a horrific zombie monstrosity as punishment for the crimes that he had committed during his lifetime.

When Lord Soth was taken by the mists of Ravenloft, he was given control over the realm of Sithicus, where his torment would continue.

It's possible to encounter Lord Soth on the battlefield, as he could be faced at the end of the When Black Roses Bloom adventure. The players should not seek a fight with Lord Soth, as he is one of the most fearsome foes that can be encountered in Ravenloft. 

Lord Soth has a built-in seventy-five percent spell resistance, which also has a chance of reflecting the player's spells right back at them. Lord Soth is constantly projecting an aura of the fear spell and has access to the power word kill, symbol of pain, and shadow walk spells, as well being able to throw a 20d6 fireball spell once per day.

The player cannot use the normal anti-zombie tactics when fighting Lord Soth, as he cannot be turned and will not be banished to another realm, as he is trapped within Sithicus.

It's also impossible to destroy Lord Soth through conventional means, as he will always reform on his throne within Nedragaard Keep.

Prince Garloth Pescheour

There are some incredibly powerful villains on this list, but only Prince Garloth was successful in destroying his homeworld.

The Apocalypse Stone was one of the final adventures released for Advanced Dungeons & Dragons. This adventure offered the dungeon master a means by which they could end their campaign with a bang, as the story involved a desperate rush to stop the apocalypse.

The end of the world is brought about by an item called the Stone of Corbinet, which acts as a link between the gods and the planes.

The Stone of Corbinet is meant to be protected by the royal Pescheour family, but they are betrayed by Prince Garloth Pescheour, who felt slighted by the fact that he was passed over when it came time to select a successor, so he decided to bring about the end of the world.

The final battle of The Apocalypse Stone takes place in the Black Keep of Prince Garloth, as he tries desperately to come up with a spell that will allow him to escape the fate of his world.

The players will have to fight their way through Garloth's forces before facing him in battle. Prince Garloth is a level twenty mage, which makes him a formidable foe.

The players will also have to complete the Black Keep and defeat Prince Garloth in one sitting, as they cannot rest at any point, due to the fact that there won't be a tomorrow.

Lolth

Lolth (also known as Lloth) has undergone numerous changes since her creation. She debuted in Queen of the Demonweb Pits as a powerful demon lord of the Abyss.

Lolth would later be established as the goddess of the drow, who served as the leader of an entire pantheon of deities. The War of the Spider Queen series would show Lolth's transformation into a greater goddess, making her one of the most powerful beings in the Dungeons & Dragons multiverse.

Lolth appeared as the final encounter of the Queen of the Spiders campaign, which was actually an assembled compilation of seven other adventures.

Lolth can appear in the form of a monstrous spider, which many fans have mocked, due to the fact that it only has sixty-six hit points.

You likely won't get a chance to get close enough to harm Lolth, due to the fact that you are battling her in her home dimension, which is filled with an army of demonic spiders.

Lolth can also transform into the form of a high-level magic-user/cleric, which gives her access to a wide-range of powerful spells.

This is to say nothing of her psionic abilities, though these are given to her at the discretion of the dungeon master.

Acererak

Acererak has earned a reputation as being one of the few mortal beings in the multiverse with the power to challenge and defeat a god in combat.

There are even cults who worship Acererak and wish to elevate him to a divine status, but he has no interest in becoming a deity and acquiring followers.

Acererak is content with building incredibly dangerous dungeons and watching adventurers throw themselves into the many devious traps that he has designed.

Acererak is best-known as the architect of the Tomb of Horrors, which has earned a reputation as being one of the most dangerous dungeons in the history of Dungeons & Dragons. 

The final chamber of the Tomb involves a battle with Acererak in his demilich form, where he appears as a floating skull, with gemstones for eyes.

The reason Acererak is so dangerous during this encounter is due to how difficult it is to actually harm him, which became true of all demiliches going forward.

If the party doesn't possess some very specific items and spells, then they will have to stand by while Acererak annihilates them with his magic.

If the party is somehow successful in defeating Acererak, then they still won't be victorious, as his phylactery is hidden somewhere in the multiverse. Acererak has an eternity to think up suitable plans for vengeance against those who dared to complete his dungeon.

Demogorgon

This handsome fellow will be familiar to fans of Stranger Things. He will also be familiar to fans of the Baldur's Gate series, who spent untold hours trying to defeat him within Watcher's Keep.

Demogorgon is meant to be the Prince of Demons, but this title isn't recognized by the demon lords of the Abyss, who all wage constant wars against each other.

He rules over the eighty-eighth layer of the Abyss, which is known as the Brine Flats and is home to some of the most powerful aquatic creatures in existence, with aboleths and krakens lurking within its dark waters.

The players will be given the chance to take on Demogorgon in battle at the end of Out of the Abyss, though he is weakened from battling other demon lords and won't present as much of a threat as he normally would.

This battle against Demogorgon will still push the party to their limits, as even a weak Demogorgon is more powerful than most of the creatures in the Monster Manual. 

If the party lose to Demogorgon, then they may have doomed the world, as he will finally gain a secure route into the Prime Material Plane through which he can safely send his demonic forces.

The battle with Demogorgon has the fate of the entire world hanging in the balance.

Ashardalon

One of the rules that all deities and divine beings must follow in the Dungeons & Dragons multiverse is that they cannot interfere with the creation of pre-incarnated souls. This is the term given to the energy that is used to create the souls of living beings.

It is up to each being to make their own choices and follow their own path, so even the gods of evil are prohibited from interfering with pre-incarnated souls.

The Bastion of Unborn Souls is one of the locations where pre-incarnated souls are born. This location was captured by a powerful half-red dragon/half-fiend, named Ashardalon, who may present the biggest challenge of any creature in the third edition of Dungeons & Dragons. 

Ashardalon wishes to feed on the unborn souls within the Bastion, which means that the party will have to defeat him in order to prevent the dragon from tainting future generations of living beings.

Ashardalon has a challenge rating of twenty-seven, which means that he will present a threat to epic-level parties.

He has seven hundred hit points, a breath weapon that deals 24d10 points of fire damage, and can cast spells like a level nineteen sorcerer.

The battle with Ashardalon will present an epic conclusion to any third edition campaign, though the players aren't likely to survive the encounter.

Dregoth

It was believed for a long time that the world of Athas was home to only a single dragon.

That dragon was slain during the events of the Prism Pentad novel series, which sparked hope in the residents of Athas that the world may be safe from the wrath of any more dragons, as none of the other sorcerer-kings were close to completing their draconic transformations.

The relief at the announcement of Borys' destruction did not last long, as a new dragon appeared in Athas.

A kaisharga, which is a creature similar to the dracoliches of other worlds, emerged from the sands and brought the might of the dragons back to Athas. Its name was Dregoth and it believed that it could become the first true god of Athas.

Dregoth is the focus of the City by the Silt Sea campaign, where the players will eventually need to infiltrate Dregoth's keep and seek out the secret treasure that he holds there: the Planar Gate.

Athas is a world that is blocked off from the other parts of the Dungeons & Dragons multiverse, which means that adventurers cannot travel to other worlds. Dregoth is the exception to this, thanks to a powerful magical artifact in his possession.

The Planar Gate is the key to Dregoth's future plans for Athas, which means that the players will have to fight a zombie dragon with the abilities of a level twenty-nine psionicist in order to prevent his plans for world domination.

Tiamat

Tiamat has appeared as the villain in several Dungeons & Dragons campaigns, though she will always be remembered as the all-powerful dragon queen of the Dungeons & Dragons cartoon, where even the mighty Venger was afraid of her wrath.

The most infamous battle with Tiamat takes place in an adventure for Advanced Dungeons & Dragons called The Throne of the Bloodstone, which is advertised as being suitable for a party of level 18-100 adventurers. Yes, you read that correctly, you can reach level one-hundred in this adventure.

The Throne of the Bloodstone concludes with the players fighting through the Abyss and making their way into the Seven Heavens.

The final battle of the adventure pitches the party against Tiamat and a group of five ancient dragons who act as her bodyguards.

This battle might seem like it would be overwhelmingly difficult for the players to survive, but Tiamat and her cohorts are actually relatively weak compared to the other creatures on this list, with Tiamat only having one-hundred and twenty-eight hit points.

The challenge comes from the number of powerful enemies that are present during this epic final fight, as the players will be barraged from all sides by dangerous breath weapon attacks at all times.

Iuz

Iuz is one of the most feared beings in the world of Oerth. He is a demigod who rules over his own empire in the Flanaess, which is in a constant state of warfare with its neighbors.

Iuz usually keeps his physical avatar within the boundaries of his realm, so the players will likely never encounter him.

The classic adventure called The Temple of Elemental Evil offers unique ways for the players to be annihilated by their enemies.

The most notorious of these can happen in the Inner Chamber, as there is a ninety percent chance that Iuz will appear if his name is spoken or if one of the altars is disturbed. This means that the players will have to fight the avatar of a powerful god, who will likely be furious with the party.

The players have a chance of being saved by St. Cuthbert, who is one of the good gods of Oerth. There is a ninety percent chance that St. Cuthbert will show up and take on Iuz, giving the players a chance to escape.

This means that there is a ten percent chance that St. Cuthbert has turned off the notifications on his phone, leaving the party to be utterly decimated by an avatar against which they will have almost zero chance of victory.

Orcus

Demogorgon might be considered the Prince of Demons, but he has a challenger to his position that may be even more powerful in terms of combat ability.

Orcus is one of the demon lords of the Abyss. He is known for being the Prince of the Undead, which means that he has countless zombie abominations under his command.

The weapon that Orcus wields in battle is almost as famous as the demon lord himself, as the Wand of Orcus has the ability to steal the souls of those it touches.

Those who wish to challenge Orcus can do so at the end of the fourth edition adventure called Prince of Undeath, which involves traveling to Orcus' kingdom and battling him within the throne room of his keep.

Orcus is considered to be a level 34 solo creature, who is surrounded by a magical aura with the power to raise all slain creatures around him as new zombie monsters that are under his control.

This means that the players have to be careful with who they send into melee range against Orcus, as even a single loss may mean tipping the balance in Orcus' favor, as each party member slain by the power of the Wand of Orcus will return as a wraith.

Vecna

Vecna Lives opens with one of the best sequences in Dungeons & Dragons history. The players are given the chance to control the members of the Circle of Eight as they investigate a strange burial mound in the Kron Hills.

The players then have to watch in horror as the high-level wizards that they are controlling are brutally dealt with by Halmadar the Cruel, who uses the power of the Eye and Hand of Vecna to freeze time and snap the necks of all who dared to enter his lair.

The players then wake up and realize that they have to succeed where some of the most powerful wizards in the world failed.

Vecna Lives concludes with the players facing off against an avatar of Vecna, who has the powers of a demigod, combined with the ancient knowledge and magical prowess of an epic level lich.

Fortunately, the players will receive help from an unlikely source: Iuz.

Iuz isn't about to let anyone show him up, so he challenges Vecna to a battle, which the players have to influence by fighting through Vecna's followers and solving the final puzzle of the adventure, in order to prevent Vecna's diabolical scheme from coming to fruition.

Borys

The world of Athas from the Dark Sun campaign setting cannot maintain deities in the same way as other Dungeons & Dragons worlds. It was revealed in City by the Salt Sea that if a god did appear in Athas, then it wouldn't be able to provide divine spells to its followers, nor receive power from their devotion.

A new god could never appear in the world of Athas, as something far more powerful stalks the sands of the world: Borys, the Dragon of Tyr.

There are no dragons that are native to Athas. Instead, a person has to transform into a dragon. In order to do this, they need to reach level twenty in both the defiler and psionicist classes, which allows them to begin the long and arduous process by which one can become a dragon.

Valley of Dust and Fire is a notoriously dangerous campaign that is set in the world of Dark Sun. The players will have to navigate the city of Ur Draxa, which is the home of Borys.

It's possible for the players to encounter the dragon, who is the equivalent of a fortieth level character in terms of abilities, whilst also possessing the powers of the most ancient dragons.

Borys' breath weapon alone deals 25d12 damage, which is enough to take down all but the most powerful of player characters.

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Can you think of any other extremely powerful villains in Dungeons & Dragons? Sound off in the comments!