Galactus The Devouter of Worlds Helment

"Of all the creatures in the vastness of the Universe, there is none like me. I was present at the birth of the Universe, and I shall be there at its end. Though I ravage worlds to live, I bear no malice toward any living thing. I simply do what I must to survive. And why must Galactus survive? For, no matter how many worlds I devour ... How many civilizations I destroy ... It is my destiny to one day give back to the Universe – Infinitely more than I have ever taken from it. So speaks Galactus!"
— Galactus

Galactus is the sole survivor of the universe that existed prior to the creation of the current universe. Originally Galactus was a humanoid named Galan, 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.