World War Hulk
Before George Tarleton was made into M.O.D.O.K., by Advanced Idea Mechanics, he was of average intellect. For A.I.M., Tarleton worked on experiments to unlock mental potential. Some sources say he volunteered and others say he was forced, but Tarleton became the next experiment.
After the transformation, he was to be known as M.O.D.O.C.: Mental Organism Designed Only for Computing. He quickly overthrew A.I.M., and became their commander. He was then known as M.O.D.O.K.: Mental Organism Designed Only for Killing. As leader of A.I.M., he has had confrontations with Captain America, S.H.I.E.L.D. and Namor.