The stranger in The Invisible Man is Griffin. Griffin is a scientist who has successfully created an elixir which he uses on himself to become invisible. However, he quickly realizes that being invisible is more of a curse than a blessing. He checks into an inn with all of his scientific investigation equipment in order to try to create the antidote to invisibility. He wants to undo the curse. However, he very selfishly wishes to conceal and control the invisibility discoveries he has found. Rather than share with the scientific community, he wants to be left alone so he can work out his investigation. He is hoping that he alone can gain all the fame and fortune from his research, if only he can figure out how to undo what he's done.