When Darkseid, ruler of Apokolips, decided to destroy all of Earth's heroes, he ordered his servant Desaad to project a futuristic techno-seed into the heart of an experimental fusion generator being tested at STAR labs in New York. Instants later, the generator exploded, to relase the monstrous flaming giant called Brimstone upon the world.

Believeing himself to be the fallen angel of an avenging god, sent to rid the earth of its false gods and graven idols, Brimstone begam a rampage that ultimately brought him into conflict with Firestorm, then the Justice League and then Cosmic Boy.

Ultimately, Brimstone was discovered to be merely a ball of artificially sentient super heated hydrogen plasma, given form by several sophisticated magnetic fields. It became the first assignment of the newly reactivated Suicide Squad to track down Brimstone and destroy him, using an experimental laser rifle specially designed to penetrate Brimstone's magnetic field and disintegrate the techno seed at his core. Even as Brimstone killed the man - monster Blockbuster, the renegade marksman Deadshot pierced his heart with one carefully placed shot, and the behemoth exploded.