Eternity

Eternity is not a being who was born but one who simply is — the living embodiment of all time and every living thing in the Marvel Universe, a cosmic abstract that has existed as long as the universe itself. First revealed to Doctor Strange, Eternity stands as one of the supreme abstract entities, answerable only to the Living Tribunal and the One-Above-All.

Few cosmic entities in Marvel's universe carry the sheer conceptual weight of Eternity, a being who made their awe-inspiring debut in Strange Tales #138 back in 1965, conjured into existence by the legendary trio of Stan Lee, Jack Kirby, and John Severin at the height of the Silver Age. Born from that era's boundless ambition to dream bigger than any single hero or villain, Eternity represents Marvel's reach toward the truly infinite — a presence so fundamental to the cosmos that their very existence reshapes the stakes of any story they enter. Across six decades of publishing, from the mystic corridors of Doctor Strange, Sorcerer Supreme to the star-spanning adventures of Quasar and the landmark pages of Fantastic Four, this entity has kept extraordinary company — sharing adventures with Stephen Strange, Spider-Man, Captain America, and Thor — accumulating three collector-recognized key appearances along the way. If you want to understand just how vast and philosophically daring the Marvel universe truly is, Eternity is essential reading.