The term 'EVIL ALTER EGO OF FICTION' can be summarized as the character of Hyde, a four-letter word. Hyde is a fictional character created by Robert Louis Stevenson in his 1886 novel Strange Case of Dr Jekyll and Mr Hyde. He is the evil alter ego of the protagonist, Dr. Henry Jekyll, and is known for his violent and unpredictable behavior. Hyde is often seen as a representation of the duality of human nature, with his good and evil sides constantly at odds.