History
Myron Schmertz was performance artist who was hated by his audience and critics. He was recruited into the Avant Guard by the Painter who amplified their powers by binding their souls in a mystic ritual.
During a show he used his powers to attack his audience but was confronted by Spider-Man and the Human Torch. Eventually the pair found the lair of the Avant Guard and after a short battle and defeat, the Painter trapped Spark inside one of his paintings.[2]Notes
Real name was revealed in the Official Handbook of the Marvel Universe A to Z Hardcover Vol. 8.