Celestial Prince

"The Celestial Princes are fierce. They're absolute. They're Heaven's most terrifying weapon."

- Castiel talking about the Celestial Princes

The Celestial Princes are the first entities created by the Abrahamic God, and are the primordial and divine beings who were created before the Birth of Existence and the Dawn of Creation.

They are exceptionally powerful entities who are only beneath their Creator in terms of powers, possessing nigh-absolute authorities over both existence and nonexistence.

Summary
The Celestial Princes are the most ancient and powerful Angels created by God before the [Birth of Existence] and the [Dawn of Creation], known for being the primordial personifications and embodiments of different forces/aspects of creation.

It is said that when they were born, their sheer brilliance created the Ein Sof - The Outside which is the Primordial In-Between Realm of Everything and Nothing - from the primordial emptiness that existed before their creation. Other than that, no one truly knows their history or origins, about where, when, or how they came to be, as they have been in existence for eons before the concepts of "history" or "information" came into existence.

Characteristics
The Celestial Princes are primordial entities who exist in a stage beyond comprehension, encompassing all the aspects, concepts, elements, and ideas that they embody. Despite this, even if everything and anything associated with the forces they embody are completely destroyed beyond nonexistence, they still possess their all-power and nigh-omnipotent powers. This is because these forces originated from them, not the opposite, and they can simply recreate or even create a new aspect, concept, or primordial force to embody as easy as breathing.

Due to their immense powers, they have been forbidden by God to appear in the three first levels of Creation in their true forms, prompting them to create corporeal forms of themselves using an infinitesimal portion of their power. Because of this, they aren't able to access their full powers while in their corporeal form, and thus often appear as mere shadows of their true selves, possessing only a microscopic portion of around 1/1000100 of what they estimated to be "a single atom in comparison to the entirety of infinity".

Their corporeal forms may vary from one Prince to another, as they are mere the appearance they had chosen on a whim. Because of this, their appearance often varies from one to another. Regardless, no matter what form they take, they always possess a supernatural beauty exceptionally greater than even the most beautiful of gods, capable of capturing the hearts and minds of all those who look upon them disregarding their gender, sexual orientation, and relationship.

They are powerful beyond the comprehension of gods, monsters, and mortals alike. They possess absolute divine authorities, and raw, infinite and limitless powers over the numerous domains of both existence and nonexistence. Even their weakest powers are infinitely powerful beyond the imagination of any being. Because of this, the primordial gods and buddhas who know of their existence have come to call them the "Absolute Powers" as there is virtually no way to defeat a Celestial Prince without the assistance of other Princes.

According to Gautama Buddha, no matter how many qualitative steps one takes, one can never possibly reach their level of existence even if they are in their weakest of moment, even if they spend an eternity trying to. They can alter and destroy any and all matter at a quantum scale, manipulating their given concepts and laws which govern over all of reality and beyond, as well as reform even if they suffer absolute conceptual death.

In addition, the Celestial Princes are capable of birthing entire multiverses, as well as erasing them effortlessly.

Despite their nigh-omnipotent powers and authority, they aren't undefeatable or unkillable. In the year 33 AD, the Celestial Prince Azrael was killed by one of her fellow Prince, whose identity still remained unknown. Her death was what ignited the Great War between the Factions, causing an all-out war between the groups led by the Princes: Heaven, Purgatory, and the Underworld.

Quotes
"I think you just got the wrong idea, Śakra. We are not gods or buddhas, neither are we truly spirits or Angels. In truth, we might not even passable to be called "beings". We are patterns. We are ideas. We are wave functions. We are the echoes of the primordial origins of everything and nothing, and so much more... Our existence is absolute and eternal, beyond the comprehension of all gods and buddhas. We have ruled over all of existence, even since long before its birth and we will continue to do so until we get bored, end all of existence, shut the light and close the door as we exist. And you will never have any true power over any of us."

- Gabriel to Indra, regarding the nature of the Celestial Princes

Trivia

 * The Celestial Princes are based on the Endless from "DC Vertigo".
 * They are, more or less, similar to the Aeons of Gnosticism.
 * Aeons are emanations or concepts that fragment themselves from the Singularity of Monad after eternities of contemplation/silence.