Hired by the government to synthesize a lethal toxic nerve gas, on a farm outside the town of Liberty, Drs. David and Ellen Pace developed a side project and created the Woodgod. While confronting the townsfolk, the tanks containing the nerve gas were shattered by a drunken mob.
Within seconds, a cloud of purple gas slew virtually every living creature within 15 miles, except for Woodgod.
The area was quarantined by the National Guard, who set up the Tranquillity base nearby.
After Spider-Man was sent into space, the Hulk and Woodgod left the deserted town.