"Joseph Martin a.k.a The Atomic Skull. He was a former college student living in Metropolis who was caught in the blast of the Dominators' Gene Bomb. The subsequent radiation mutated him leaving his skin transparent so that his bones were visible. The blast also endowed him superhuman strength and invulnerability. He is highly radioactive, and is able to channel his radioactivity into controlled energy blasts. It has been seen that submerging Martin in large bodies of water has been able to render his powers inert." Morgan said as if reading off a card. "Uh sorry Uncel J'onn made me memorize a few villain threats before I joined the team."