After the radiation, The Leader could predict outcomes of things in advance, had a perfect memory, superhuman intelligence and could control normal humans by only touching them. He is sophisticated in weaponry, computers, humanoids physics and genetics. He also has an army of plastic Humanoids, which he used to try and rewrite Earth's history, overthrow the US government and capture the Hulk to study him and steal Bruce Banner's Absorbatron to absorb the energy of a nuclear explosion.