History
Jay Jameson was the infant child of Kristine Saunders and John Jameson. He lived on the Moon, where his father had been sent by NASA.[1]
Following the defeat of the Celestials, Jay and his parents returned to Earth. His mother, Kristine, mutated upon exposure to the Terrigen Mist in Earth's atmosphere, and fled with Jay. She was eventually found, and Jay was taken in by Scott Lang.[2]