The Fantastic Four are battling Dr. Doom, who has turned into an organic metal capable of absorbing and manipulating electrical energy. They win the battle by exposing him to excessive heat and then cooling him down rapidly with water, turning him into a solid piece of metal.
Professor Philip Brainard creates Flubber and tries to learn more about it. He performs quick tests on the physical properties of Flubber and finds that it is a highly viscous elastomer that can also phase shift between a liquid and a solid. Using observation skills, he also learns that Flubber is moldable, foldable, ductile, and elastic, among other properties.