Over two decades ago, Jonas Harrow was disgraced as a surgeon and expelled from the medical profession for unorthodox experiments.

In recent years, Harrow enhanced criminals to superhuman status for a fee, the hapless Megawatt his first known subject.

By now obsessed with Spider-Man, he tested the device on the hero's self-appointed enemy, Daily Bugle publisher J. Jonah Jameson, whom he drove to a nervous breakdown.

[6] Harrow accepted a Roxxon Oil contract to create synthetic automated soldiers; to this end, he again extorted industrial crimes from Will O'The Wisp.

Exposed during the fray and arrested, Harrow was soon at liberty, distributing advanced weapons on the black market to finance new and inhumane experiments.

Experiencing chest pains, Harrow phoned for emergency medical assistance before collapsing, but the robots and cyborgs that defended his facility drove off rescuers.

[volume & issue needed] Jonas Harrow was hired by the Hood to take advantage of the split in the superhero community caused by the Superhuman Registration Act.

However, the Hood soon returned, with new powers granted by the Norse Norn Stones, and blows Harrow's head off with a single magically-charged bullet.