Mr. Hyde: Friend or Foe?

The way Mr. Hyde is portrayed in the first four chapters gives me the idea that he in fact is a medical madman. The fact that the only description anyone can give of him is deformity gives me reason to believe that maybe they don't mean deformity in a sense of a physical appearance but maybe the deformity is a vibe they get from him or a mental state. Could his mind be the deformity? I feel as if peoples first impressions of him are that of disdain so in their minds every time something goes wrong they automatically assume its of his doing. Mr. Utterson is basically playing detective, trying to get the scoop on Mr. Hyde. In my opinion he is doing this partially out of concern for his friend and partially out of envy. He could be envious of Dr. Jekyll's will as it is mentioned numerous times. When he goes to discuss the will with Dr. Jekyll and he is informed that Mr. Hyde is no danger to the doctor it raises the question of rather Mr. Hyde is fiend or foe. It seems as if Mr. Utterson is still not completely at ease with the situation but makes a promise anyways. We hear all of these stories of the malice thins being done by Mr. Hyde but we still do not know why he's doing them. Maybe he's working on something Dr. Jekyll started but cant finish. I guess we'll have to keep reading to find out.