Simon "Ghost" Riley is a key member of Task Force 141 in the *Call of Duty: Modern Warfare* series. He is characterized by his stoic personality, tactical expertise, and his iconic skull mask, which hides his face. Known for his loyalty and combat skills, he is a fan-favorite character often associated with gritty, high-stakes military operations. His mysterious background and professional demeanor have made him a pop-culture icon within the gaming community.