If the male protagonist in a novel was cold or bloody, he would usually involve some extreme topics and plots such as darkness, violence, revenge, and so on. The plot of this kind of novel may be more ups and downs, and readers may feel depressed and uncomfortable during the reading process. The following were introductions to some of the novels with the male protagonist as cold or bloody: The Seven Deadly Sins Series 2 Dark Blood Age series 3. The Crown of Sin series 4 Battle Through the Heavens series 5. The Full-time Expert Series 6 Dark Blade series Douluo Continent Series These novels were all well-known online literature works. The character and plot of the male lead were representative to a certain extent. The readers could choose a novel that suited them according to their preferences.