 He also played Aminadab Sleek in "The Serious Family", Mawworm in "The Hypocrite" and Tony Lumpkin.James Smith, a critic of his time, spoke of his success in presenting "the ponderous stolidity and impenetrable stupidity of certain types of humanity—the voice, the gait, the movements, the expression of the actor's features, were all in perfect harmony with the mental and moral idiosyncrasies of the person he represented, so that the man himself stood before you a living reality".In 1864 Coppin again lost his money and went to the United States.