Janitor Sam Sterns found himself exposed to Gamma radiation while working in a lab where Bruce Banner was performing experiments. Transformed into a superhuman genius, Sterns took the name of the LEADER and uses his enhanced intellect to come up with increasingly devious plots against the world’s heroes as he sets out to accomplish his one, true goal… complete and utter domination of the world!

Like his physically imposing enemy the Hulk, the Leader has green skin, and unlike the Jade Giant has a small body and a large, elongated head