Dr. Gao

Dr. Gao and Victor Krane were two villains who always worked together as partners. They loved creating armies, and both harbored a desire to wipe out the human race. Dr, Gao liked androids, but Krane prefers bionics. When Krane died, Dr. Gao begged for his life back. However, Krane's body was gone. Gao decided to allow Krane to inhabit half of his body. Thus, Dr. Victor Gao-Krane was born. Gao-Krane continued to be a major threat throughout season 2, until he and his android army were killed one last time.