Jekyll's transformed body, Hyde, was evil, self-indulgent, and uncaring to anyone but himself. Initially, Jekyll controlled the transformations with the serum, but one night in August, he became Hyde involuntarily in his sleep. Jekyll resolved to cease becoming Hyde.

Are Dr Jekyll and Mr. Hyde the same person?

Jekyll and Mr. Hyde are the same person. Dr. Jekyll is a scientist who, while searching for a way to separate his good self from his bad impulses, creates a potion that transforms himself into a man without a conscience.

What is the difference between Dr Jekyll and Mr. Hyde?

Jekyll and Mr. Hyde are the same person broken into two men: Dr. Jekyll represents the socialized, restrained, morally informed ego and superego, while Mr. Hyde represents the primitive, atavistic desires let loose without ethical restraint.