Josiah was born to Faith and Isaiah Bradley via a surrogate mother. Josiah was the result of an illegal, covert experiment conducted by members of the U.S. military. His father was one of the very first test subjects in the United State's covert Super-Soldier program, making his genetic material the perfect source for replicating the Super-Soldier Serum. Through experimentation there was a single success, the 39th attempt at genetically engineering a Super-Soldier baby.