Nathaniel Banner (Earth-5171)

Nathaniel Banner was at first a normal human scientist until he was framed for a crime he didn't commit and sentenced to death. As an alternative to execution, he was invited to participate in a military experiment  which was an attempt to recreate the Super-Soldier Serum as a preventive measure for the next generation of warfare. It went wrong and Nathaniel was mutated into the Hulk. He went on the run and began to try to learn to control the Hulk and to use him. He became a founding member of the Avengers.