Hulk refused to ally himself with Leader. Realizing something was wrong, Leader bombarded him with more gamma radiation and removed the shrapnel from his brain. He then sent the Hulk to the Watcher's home planet in order to steal the Ultimate Machine .  He clashed with the Amphibion , an alien who also sought the Ultimate Machine, and bested him in combat, and was returned to, Earth. Leader took the Ultimate Machine from Hulk and attempted to use the device. Leader's plan backfired, as the machine seemingly killed him. 
The degree of Doctor of Philosophy is conferred by the Institute primarily in recognition of breadth of scholarship, depth of research, and the power to investigate problems independently and efficiently, rather than for the completion of definite courses of study through a stated period of residence. The work for the degree must consist of systematic studies of an advanced character, of research and the preparation of a thesis describing these. A thesis is to be a substantial new contribution to the field that would be released into the stream of scholarship. In addition, the candidate must have clear self-expression in both oral and written English.