He could feel the power surging through his veins, spiraling 'round his heart like nymphs, knowing in their divinity and yet content to play with one another away from prying eyes. He did not share this world view, however.
He could feel his body dissolve into ascendancy, the universe becoming a plane and he, a giant, walking level with gods of ancient myth, omnipotent and disapproving. And as his mind evolved into this higher level of understanding, so to did his body grow in form; the trees around him first became not unlike fields of wheat, forests brushing aside at a stride. As time went on, even the Sequoias of lands he could not see but perceive in every detail, soon were to him blades of grass as blades of grass were to ants.
Even then, his might and size increased as his ability to grasp what was the universe did; that was, to say, infinitely. Soon, even the earth beneath him was too fragile to bear the burden of his girth, and the heavens embraced him with light and warmth. His hand stretched out, and grasped the stars in their weathered folds, born of a life submitted to the cruelty of faceless suits and the unending need of mortality. As he felt his ability to exist in this universe reach a crux, he once again turned his attention to a once-home, as he had considered it for years living a limited life in an oppressed existence.
With a gauntlet of steel, his finger pricked the small planet, now only a dark speck in a vast eternity. The only thing that blocked the abyssal continuity of the darkness he inhabited were the super-clusters of galaxies, spiraling away from him as if repelled by the abomination of his presence.
Saddened by this perception, he shrunk his form, until his metallic form once again stood adamant, brooding over the green and blue planet it dwelt over as it clung to the Moon as if it were a lover. Feeling the power within him urging him towards some purpose less than himself, and yet, making up the totality of his existence, he allowed himself to stand at a form, massive by mortal perceptions sure, but able for this planet to bear in the battle royale to come.
As he spiraled towards the city, specks of light dotting a small fraction of a principal continent's surface, atmosphere trying desperately to bar from this place his entrance, a cry came to his metal lips, body shining with fiery intent.
"JUST WHO THE HELL DO YOU THINK I AM?" screamed the newborn Gurren-Lagann, voice echoing for thousands of miles as his heavenly descent finally came to a slow.