A comic book villain is a character in comic books who opposes the hero and often embodies evil or malevolence. These villains typically have unique powers, skills, or resources that make them formidable adversaries. They often have complex backstories that explain their motivations, which can range from personal vendettas to grand schemes for world domination. Villains like The Joker from Batman or Magneto from X-Men are iconic examples, each representing different themes such as chaos and revenge. Their interactions with heroes not only drive the plot but also explore moral dilemmas, making them essential to the storytelling in comic books.