Here is my list of the top 5 Cosmic beings. Some may not agree with this but thats okay. State your top 5 down in the comment section if you want, see how they compare with mine.
Not in any particular order:
1. Galactus
Galactus, the sole survivor of the Universe that existed Prior to the current Universe. Galactus was originally named Galan, a humanoid who was born on the planet Taa,a paradise-like world whose civilization is said to have been the most advanced of any of the known universe of that time.
2.
Phoenix Force
The Phoenix Force is one of the oldest known cosmic entities, representing life that has not yet been born. The Phoenix Force is an immortal, indestructible, and mutable manifestation of the prime universal force of life. Born of the void between states of being, the Phoenix Force is a child of the universe. It is the nexus of all psionic energy which does, has, and ever will exist in all realities of the omniverse, the Guardian of Creation, and a de-facto guardian of the M'Kraan Crystal. Phoenix is among the most feared beings in the entire universe - having the power to cut and regrow any part of the universe, as well as destroy it entirely, which is part of the Phoenix's purpose: "The Judgement of the Phoenix": to burn away what doesn't work. Recent interventions of the Phoenix suggest that "what doesn't work" is what has become stagnant instead of naturally evolving.
3.
One-Above-All
The One-Above-All has existed since the dawn of creation and is solely responsible for the creation of the Multiverse. It is said that his His only weapon...is love. As the supreme being of the Omniverse, the One-Above-All is Omnipotent, Omnipresent, Omniscient and Omniversal, above all cosmic entities, even the Living Tribunal.
4.
Odin
Odin's true origin past is a mystery, often Odin himself will tell short stories of it. Odin was presumed to be the son of Bor (father, one of the first Asgardians) and Bestla (mother, a mountain giantess). Bor and Bestla had two other sons, Vili and Ve. According to myth and legend, Vili, Ve, and Odin journeyed into the realm of Surtur when they were younger. Vili and Ve sacrificed themselves to allow Odin to escape from Surtur's realm. Upon their deaths, Odin's own godly attributes were increased as a result of his brother's powers joining with his.
5.
>Tyrant
In the distant past, the devourer of worlds, Galactus, created an immensely powerful cosmic being in his own image: Tyrant. However, unlike his creator, Tyrant developed a lust for tyranny and conquest that directly conflicted with Galactus' desire to do only what is necessary to survive. Tyrant's conquests aroused opposition in many forms including an order of super-powered female warriors called the Spinsterhood, of which Ganymede was a member.
Eventually, Galactus learned of Tyrant's betrayal and engaged him in a titanic battle that unleashed energies that (according to Thanos)destroyed whole galaxies. In the end, Galactus barely defeated Tyrant.
Thats it from me. Im, Ron Burgundy, You Stay Classy CBM