Dr. Skull

Origin
Dr. Skull was apparently an alien scientist who wished to conquer the earth, and commanded a fleet of spaceships that was successful in bombing Washington D.C. Dr. Skull flew around in a space ship, built a headquarters in the side of a mountain cliff, and possessed a number of technological wonders, including a handheld ray gun. He was a highly intelligent scientist and invented a super drug that made men fearless. He was aided by a small army of human slaves and kept trained animals including an ape named Bolo and a team of huge and vicious tracking dogs. He was a recurring enemy of The Red Blazer who he wished to destroy.