William "Wild Bill" Dunn was an American engineer working with the British army in a secluded section of Ethiopia. While working, his team was attacked by a group of supernatural beings named the M'bujies, who wounded Dunn and killed his teammates. Dunn was rescued by "Boomerang" Jones, an Australian soldier who had been given up for dead and was now fighting his own private war against the Nazis. After Dunn regained his strength, the two men created a super-vehicle out of captured Nazi equipment, and they named it the Blue Tracer. It could crawl like a tank, fly like an airplane, dive like a submarine, or sail on the surface. They then used this vessel to destroy the M'bujies and escape the jungle. The two traveled the world, independent of any nation's military, and fought the Axis forces during the rest of the war.
- The Blue Tracer
- 17 Appearances of William Dunn (Quality Universe)
- 1 Images featuring William Dunn (Quality Universe)
- 1 Quotations by or about William Dunn (Quality Universe)
- Character Gallery: William Dunn (Quality Universe)