Before the universe was created, the Infinity Stones existed as a singular force. Four Cosmic Entities created the stones: Death. Eternity, Entropy, and Infinity. Each of the stones possesses unique capabilities that have been enhanced and altered by various alien civilizations through the millennia.
“It’s always about, somehow, finding a part of myself that is relevant, and then turning the volume up on that particular part. So, I am all of the characters I’ve ever played, and I am none of them at the same time.” — Tom Hiddleston