Shark is an American comic about fighting crime. It was produced and broadcast by DIC Entertainment. Dr Paradigm, a double-faced doctor, tried to build a mutant army and conquer the city of fission through transgenic technology. In an experiment, he successfully turned a lobster and swordfish into mutants, but Dr. Bolton ran into him. Dr. Bolton opposed the research of Dr. Double-faced, but became the experimental object of Dr. Double-faced and became a monster. In order to get rid of weeds, Dr. Double-faced designed and caught Burton's four sons, and then injected them with drugs mixed with shark genes. The four brothers did not die because of this, but became a shark man with a shark upper body and a human lower body. Shark man is very powerful and can walk freely underground; Their big mouths have amazing bite force, and they can bite off and swallow steel and concrete. The story behind is a series of battles between Shark Man and the army of double-faced doctor mutants.