Nathaniel Tryon/Earth-One

Overview
Nathaniel Tryon was a petty criminal who broke into the nuclear power plant where he worked as a security guard. One of the reactors overloaded and the resulting meltdown disintegrated Tryon's corporeal body, turning him into a being of pure atomic energy. Forced to wear a special containment suit, he became a costumed supervillain who called himself Neutron.