Oblivion

"Now don't think badly of me: I can't help but wish for the end of all things. It's in my nature, my very identity, for my name...to some, at least -- is Oblivion. Before creation was... I was. Where creation ends... I wait. I am the void. The breath between life and death. Between death and rebirth. The nothing -- from which the everything springs."

- Oblivion

Oblivion is a cosmic abstract entity and once was considered another aspect of the Endless, as he worked very closely with the personification of death. Oblivion predates Creation, and represents non-existence and is a counter-force to Creation, as he embodies the nothing that existed before it, and wishes to return it to what it was once before.

History
Oblivion is the embodiment of nonexistence, residing beyond Creation within the Void itself and all the abstract personifications that make up its totality. While entities such as Eternity, Infinity, The Endless, The Source, The Spectre, or The Living Tribunal are connected to Creation and the Outerverses they watch over, and personify concepts essential for existence (Such as Time, Space, Death, Emotions, Life, Chaos, Destruction, Judgement or Order), Oblivion "exists" entirely beyond it, being outside form, shape, space and time. According to his own words, creation is cyclical, always being birthed from the nothingness that he embodies, and eventually always returning to nothingness.

Oblivion came into existence together with the cosmic entities Eternity, Infinity, The Endless, and The Elder-Gods when Creation came into existence and these beings see each other as siblings. Oblivion has a very close relationship with the Endless, especially Death, and the two may have had a close relationship with each other. Just like Eternity and Death have a strong rivalry, Oblivion has a strong rivalry with Infinity, a rivalry usually fought through avatars. Oblivion usually resides inside a pocket dimension existing within the Void itself, allowing him to freely interact with the rest of Creation, known as the Outer Void.

In his rivalry with Infinity, Oblivion empowered Maelstrom one of his thousands of avatars, and sent him his agent, Deathurge to assist him. As Oblivion's agent, Maelstrom tried to destroy one of the Outerverses in Creation (being secretly supported by Weldrok, as a way to spread destruction and evil), but he was stopped by Quasar, the avatar of Infinity. Oblivion, Infinity, The Endless, The Elder-Gods, and Eternity then came to a new agreement.

However, the most notably distinct about him from the other cosmic and abstract forces of Creation, was that he had never been seen under the jurisdiction and rules of God, that would often be inforced by his Avatars or other beings like The Living Tribunal or The Spectre and only ever interacting with the physical reality through manifestations since his entry into an Outerverse would result in its destruction. One such form was the Chaos King, an entity of darkness and destruction with powers so great that it acted as the direct opposite to the Outerversal incarnation of Eternity, and nearly devoured all of existence, yet even the Chaos King is but a fraction of Oblivion's infinite self.

Powers
Oblivion is a cosmic and also a virtually omnipotent entity representing the inevitable ending of all things, oblivion itself. He can manifest anywhere he wishes, and cannot be affected by the mortal plane if it doesn't suit him. Oblivion can empower agents or avatars with different amounts of power to act in his name.