Cosmic entity (Marvel Comics)

Cosmic entities, also referred to as cosmic beings, are a type of fictional character appearing in American comic books published by Marvel Comics. They possess power on a universal, multiversal or even omniversal level, far beyond those of humans or conventional superheroes, and frequently serve some natural function in the universe.

The fictional Marvel Universe contains a number of beings in this category that are literally part of the universe, with their existence necessary to provide a certain function. Much like organs provide specific functions for the human body, these entities provide functions for the universe itself. There is no official (known) name for these beings, but they are often referred to as cosmic entities, cosmic beings or abstract entities. Many of them embody some concept or fulfill some essential need, but there are others who are considered within this reference frame simply due to their scale of power, such as the Infinites, Beyonders, Cosmic Cubes, or Watchers. Death is also considered to be a cosmic entity.

Each cosmic being is unique, but they often have the following characteristics in common:

In the fourth Eternals limited series, by writers Charles and Daniel Knauf, the Dreaming Celestial states that "Every component in the physical Universe is a model/example/function of balance... Every particle/being/concept/action exists in this state of sublime equilibrium to serve [a being known as] the Fulcrum. And when asked by the Eternal Makkari whether "every cosmic being in this Universe is a total tool", replies "Yes. We are all tools of the Fulcrum".

...
Wikipedia