Griffin was a great scientist in the story Footprints without Feet. Despite being a mastermind and discovering something that could have been potentially used for the benefit of the world, he misuses it. Thus, Griffin is a rogue, because he uses the discovery of invisibility to rob a Clergyman’s house. He also commits theft at shops and stores. The power of invisibility could have been used for much greater things but he chose to misuse it.