Once going by the name of Jack, he was a Hyperion programmer whom was often called John by his superiors, mostly because they did not care to know him better. He was married and had a daughter, Angel. As president and CEO of Hyperion, Jack would go on to wage a war on Pandora under the guise of peacekeeping, and to mine the element called eridium from the planet. Jack believes himself to be a heroic character and savior of others. He often calls people kiddo, pumpkin or cupcake.