While most of the demons viewers see on Supernatural are just glorified henchmen, wreaking havoc on towns but no match for hunters. Though, while many of these henchmen are quite forgettable since they are so easily disposed of, the more powerful demons of the bunch are world destroyers, who can and have brought about the apocalypse.

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While world domination or destruction isn't always in their plans, one can be sure their schemes don't involve rainbows and sunshine. These demons vary from the more egocentric to the just plain nihilistic. So let us begin the countdown of who the smartest demons in Supernatural are?

Supernatural: Cain

Cain tells his story in Supernatural

Probably the rarest demon seen on Supernatural, as, at least some of his humanity was left intact. He was capable of feeling love and regret. Cain's knowledge base was from an eternity of experience.

He was not one easily goaded into returning to his old ways but once the Mark of Cain took him back over, he was shown to be arrogant, relying more on brute strength, rather than intelligence to defeat his enemies. However, that doesn't mean he lacked such intelligence, as he was able to evade detection for centuries before Dean finally found him.

Supernatural: Alastair

Alastair was probably one of the more sadistic beings to ever appear on Supernatural. A torturer by trade, he not only enjoyed being in Hell but preferred it, as it allowed him to inflict pain on others, something he relished in. Alastair knew exorcisms that could expel angels from their host, along with knowing spells to incapacitate reapers.

Which slowed down Death himself. His extensive knowledge of torture was enough to make him one of the more feared demons in Hell, as he could easily contemplate a million ways for someone to die.

Supernatural: Dagon

Supernatural Quiz - Dagon

Just like many of her other brethren, Dagon was known for her brute savagery, yet, somehow, she managed to take it up another notch. This being something that gained her the respect and fear of other demons below her.

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Dagon's intelligence is best seen in her ability to manipulate others to do her will.  A sadistic being, who enjoys cracking jokes, while she is cracking skulls, making her personality that much more terrifying. Unlike others of her kind, Dagon was capable of mind control, giving her even more power in her evil arsenal.

Supernatural: Asmodeus

While Asmodeus was one of the oldest of Lucifer's demons, by his admission, he was one of the weakest. Instead of using overwhelming brute force, he rose to power because of his sheer intelligence and capabilities of manipulating others to do what he couldn't by himself. His acting was impeccable as he tricked Jack into believing he was an ally.

A demon that uses his brains over brawn, Asmodeus prepares for any inevitable outcome, in his attempt to stay one step ahead of his enemies. Resourceful, he managed to acquire the skill of shape-shifting to his repertoire.

Supernatural: Ruby

Ruby was weak, especially when compared to Abbadon or Cain. Yet, was able to move up through succession because of not just her intelligence but the ability to manipulate demons and humans to do her bidding. Deceitful by nature, she easily hid her true allegiance from those closest to her, masking her disgust for everyone but Lucifer behind dark humor.

Her remembrance of a time when she was human, haunted her because of what she has become. Though, not that powerful on her own, she did manipulate Sam into bringing Lucifer back.

Supernatural: Crowley

Crowley was the very embodiment of a self-made King of Hell. Quickly moving up the ranks from crossroads demon to most powerful demon in all of Hell. Self-preservation is and always will be his main goal. His power resides in his deal-making abilities as he is able to garner, at least temporary support from stronger beings to accomplish a mutual goal.

Opportunistic, he keeps his alliances short, jumping ship when things go awry. Being merciless is his calling card, as he is unafraid of getting his hands dirty, even if he prefers getting others to do it for him.

Supernatural: Lilith

Being the first of her kind, Lilith holds a certain place of respect and admiration among her own kind. Lilith inspires fear not by just sheer domination but by who she usually chooses as her hosts. Usually preferring taking on the appearance of children as a means of manipulation to get closer to her enemies.

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Plus, this gives off an eerie vibe that puts terror in those who wish her harm. When she decides to take on the form of a full-grown woman she can be seductive, using this power to willingly get others to do her bidding.

Supernatural: Azazel

Ol' Yellow Eyes, was the first demon to gain the ire of the Winchester boys by killing their mom. Azazel understood the power of psychological warfare, feeding off the fear of his enemies as he patiently waited for a time to strike. Azazel was capable of changing course if the one he was on, was failing, being able to do so, even in the middle of battle.

He was one demon who could conceive the grand scheme of things and planned accordingly. His aim of creating Special Children, humans with supernatural abilities was his foremost concoction.

Supernatural: Abaddon

One of the two remaining Knights of Hell left, Abaddon was a high-ranking demon, who used time travel as a means of erasing her enemies, while, furthering her grand scheme. Like Lilith, Abaddon was one of the first human souls to fall under Lucifer's spell and was an apprentice to the first Knight of Hell, Cain.

Naturally, cunning with an ability to be a master strategist, she patiently studies her prey before finally stalking and killing them. Unlike Crowley, Abaddon is not content with just being over Hell; she wants full control over the world as well.

Supernatural: Lucifer

The first of his kind and the real King of Hell. Lucifer was the first master manipulator, cunning enough to even match wits with God. Initially driven by jealousy of not being God's favorite anymore, Lucifer waged war against his father and fellow brethren. Lucifer is a crafty demon, using times of mercy, even as a means of luring people into a false sense of trust.

While his arrogance sometimes clouds his judgment, he keeps his grand scheme in the forefront of his mind. He prefers ruling over subjects, rather than just annihilating them.

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