How they compare: Nyarlathotep (Cthulhu Mythos)

 

Beyond dimensioned existence, beyond space and time, beyond this world of men and their feeble gods resides the outer gods. Infinite, eternal, and formless, their presence is impossible for any human to comprehend anything but an infinitesmal subsection of their immensity. Nyarlathotep is their messager, spawned from great Azathoth, king of all as his will. 

Nyarlathotep executes the will of the outer gods across the meager atom that is the infinity we know to the outer gods. Amount the Outer Gods, Nyarlathotep is closest to mankind in comprehension and power, weakest of the outer gods. Nyarlathotep is a malevolent force, lording over the infinitemsal beings of existence and pursuing the vile and despicable. What girds such a malignant intellect? Such is known only to the Outer Gods

This is generally where I'd go over the power and speed of the character in question however this is inapplicable to Nyarlathotep. The Outer Gods exist in the court of Azathoth, beyond the final gate. 

The Outer Gods transcend all concepts of space and time. They are in no place and all places, omnipresent and nowhere. They are in no time and all times, eternal and never-there. All position and change are features of lower perspective of a reality that is but an atom in the true infinity of the Outer Gods.

Likewise in terms of power; such concepts as "power", is a human concept, transcended like all other archetypes but the Outer Gods. Trying to apply a lowly concept like power to the Outer Gods would be akin to attempting to apply basic strikes of matter and energy to conceptual existence. The Outer Gods are made of "formless chaos", being transcendent of qualifiers or "forms". No display of power can effect them. While Nyarlathotep could crush all of infinite physical existence just as we could an atom, such not his power. His is the power of the Outer Gods, transcendent of physical or even conceptual boundaries.

In terms of abilities, Nyarlathotep is most famously knwon for his many incarnations. He is never actually seen in the entire canonical Cthulhu Mythos instead only showing in the forms of avatars. It has stated that he warlks the Earth with 1,000 avatars and that he has countless across existence. It is unknown if his true self would have greater versions of every ability his avatars possess, but at the very least he has the same abilities as they are but parts of Nyarlathotep.

One of his avatars is the Black Pharaoh who appeared before on the Earth. At his coming, peasents prostrated themselves before him though could not say why. His presence caused restlesses, an inability to sleep and nightmares. He created distortions in a city, causing madness, twisting a city, and shows visions of the unimaginable beyond space and time as well as showing the future. He also seemed to cause people to vanish. He appears as well in the Fungi from Yuggoth, showing visions of the future where he will reduce the Earth to dust and blow it away. This version then personally brings the narrator to the court of Azathoth beyond all space, time and human understanding. Hypothetically this could be used as an extreme form of BFR. This BFR potential is surprisingly consistent for him.

This is possibly this same avatar Nyarlathotep uses in the Dream-Quest of Unknown Kadath. There within Nyarlathotep showed he could manifest both in physical and mental domains, appearing in the dreamlands. The best feat of this version of Nyarlathotep is after Nodens, one of the Elder Gods, irritates him, he sneals away the gods of Earth, again seemingly BFRing them outside infinite dimensions of space and time, at the very least stealing them away from their home. 

One of Nyarlathotep's avatars is the "Black Man of the witch cult", a completely black skinned individual who resembles the Christian Devil and who grants magical powers to witches of New England (including witch Keziah Mason who was able to escape death by sending her soul to the dreamland and implied to manipulation dimenions) and who was also stated to be able to send someone to the court of Azathoth beyond space time and concepts. 

Yet another avatar of Nyarlathotep was the Haunter in the Darkness, a three-eyed being of pure darkness from the void beyond space and time, who could grant forbidden knowledge in exchange for horrid sacrifices and had a strange adverse reaction to light.

Finally there is perhaps the strongest aspect of Nyarlathotep. Nyarlathotep is the heart and soul of the Outer Gods, Azathoth in particular and as such will exist so long as they do.

In terms of weaknesses, Nyarlathotep's avatars have weaknesses that are likely not transferable to his main self. For his main self, Nyarlathotep is trapped by the will of his master Azathoth who he holds in contempt. He is also rather sadistic which might be a weakness, though it's unclear. There's no point where he fights someone of his same stature.

Name: Nyarlathotep

Origin: Cthulhu Mythos

Classification: Outer God, Heart and Soul of the Outer Gods, Messanger of Azathoth, many titles beyond

Powers and Abilities: Absolute Being, Will exist so long as the Outer Gods do, Avatar Creation, BFR, Power/Visions Bestowal, Matter Manipulation, Mind Manipulation, Existence Erasure, Spacetime Manipulation/Dimension Manipulation, Soul Manipulation, Darkness Manipulation

Weaknesses: Bound to Azathoth's will

Destructive Capacity: Inapplicable, transcends the concept of "power"

Range: Inapplicable, transcends the concept of "distance"

Speed: Inapplicable, transcends the concept of "spacetime"

Durability: Inapplicable, transcends the concepts of "power", "death", and "destruction"

Stamina: Inapplicable, transcends the concepts of "energy" and "time"

Standard Equipment: Depends on avatar

Intelligence: Nigh-Omniscient

So how would he do in other verses?

In DC Comics, Nyarlathotep would transcend the infinite dimensions of the third world plane of reality as he does the infinite dimensions of his own universe and above that are the gods of god sphere, the fourth world plane of reality that is a platonic archetypal world. Nyarlathotep would be above this too and it is almost a perfect comparison, as this would be similar to the archetypes and Elder Gods of the Cthulhu Mythos. He would transcend the New Gods of DC the same as they transcend regular mortals.

This would put him in line with the fifth world beings, the monitor race. He could be a threat there, particularly if his BFR works here to send one to the void which erase those of the fifth world but I am unsure if their plot manipulation would work on him. There is no plot manipulation in the Cthulhu Mythos but he is an absolute being and presumably transcends the concept of "plot". At the very least I don't believe he would be able to beat Cosmic Armor Superman, who is the meta-concept of good, able to create hyperstories and get stronger to defeat evil, and Nyarlathotep is the "evil" Outer God. 

In Marvel Comics, Nyarlathotep would be ridiculously strong. He would be above the multiversal concepts, similar to how he transcends the elder gods and archetypes. As a being of formless chaos, Nyaralathotep would be as difficult to even affect as Oblivion who is considered one of the strongest beings in the verse. It's likely if he existed in the Marvel Cosmology, Nyarlathotep would be considered on the same general level of power as the Living Tribunal and the strongest cosmic forces of the Marvel Cosmology and would be an imminent and nigh-unstoppable force for the multiverse.

In the Dungeons and Dragons, there are hierarchies of gods with their own divine ranks who can affect the entire multiverse and these two would be as nothing before the crawling chaos. Depending on interpretation, Nyarlathotep would be somewhere between Ao, the overgod transcending divine rank controlling all gods, and the Luminous being his boss and representation of the Dungeon Master. He would be able to solo essentially the entire verse, able to steal away all the gods from their domains just as he did to the Gods of Earth and at least threaten the Overdeity.

In the Umineko verse, Nyarlathotep's position depends on one's position on the notion of absolute existence vs plot manipulation and metafictional layers. Uminkeo is a series of metafictional layers that manipulate lower layers like stories. He should be at least about on par with a (very evil) voyager witch who can manipulate gameboards containing layers of infinite metafictional multiverses and due to his absolute nature may be more akin to a territory lord, being an absolute part of being, a literal domain. 

In the Dark Tower-verse, Nyarlathotep would be relative to the strongest beings who can threaten the whole of the tower, assuming again you view the metafictional layers thing as being relative the infinite layers of existence in the Cthulhu Mythos. He would be similar to beings like the Deadlights, but not quite on the level of the Crimson King or Gan.