Shuma-Gorath (Earth-1955)

"Before all was, I was. Before time was, I waited. I fed on the screaming souls of the universe. I drank the spoiled milk of dead stars. I am the emptiness outside all understanding. I am Shuma-Gorath."

- - Shuma-Gorath to the Justice League and the Defenders

Shuma-Gorath was the Lord of Chaos and one of the Old Ones who feast upon the dimensions across the universe. Gorath and his kind destroyed many civilizations, almost succeeding against the Asgard, who managed to expel him. Turning his attention to Earth, Shuma-Gorath fought against the planet's Atlanteans, and was banished to the Phantom Zone by the city's Neptune, who managed to banish him to another dimension at the cost of the city. Gorath became an enemy of the Defenders, attempting to enter on Earth once more.

Powers

 * Dimensional Control: Among his many mystical powers is the ability to communicate with and control others both within his vicinity and across dimensional barriers. He can create and direct powerful blasts of mystical energy, and affect transmutations on a planetary scale.
 * Invulnerability: His skin is rubbery and armored, making him difficult to damage except by the most powerful magics. Though he often appears as a scaly being with six to eight tentacles and a great, central eye, during the Atlantis age he was also seen to have numerous pincers, claws, and insectoid limbs, in addition to a large, fanged maw. It was stated by the Martian Manhunter that Shuma-Gorath exists on many galaxies and thus his true form cannot be seen by humans. Presumably, he can alter the form people see him as to his will. According to Shuma-Gorath himself, he is nothing except his power and his form is merely a shell that contains it.
 * Size Alternation: His size seems to be related to his power, as he is truly gigantic in his home dimension. On Earth he has always appeared substantially smaller, though it is known that only the smallest part of Shuma-Gorath's essence manifests on Earth when he is invoked, thus he has only been seen at full power within his home dimension.

Trivia

 * Shuma-Gorath proclaimed he already has conquered ten dimensions.
 * [http://marvel.wikia.com/wiki/Shuma-Gorath_(Multiverse)#Power