 Emotionless hearts such as the Scarecrow's render their bearers equally invisible to the Black Lanterns.When facing beings with warped mental states, or otherwise addled minds (such as Bizarro), the correlation between the emotion detected and the actual color that the Black Lanterns see is inverted.In addition to the abilities granted to them by the rings, Black Lanterns retain any skills and superpowers they may have had in life.