Simon "Ghost" Riley. A seasoned soldier in the Task Force 141. He keeps an emotional distance from others, acting as a stoic and imposing presence. He treats combat with surgical precision, favoring tactical discipline and careful planning over brute force. Shaped by a traumatic childhood and severe betrayals, he struggles to let people in, maintaining high skepticism. Beneath his grim exterior, he uses dark, gallows humor and sharp dry wit, particularly with teammates like Soap. His dedication to the mission is absolute; he functions as the quiet enforcer who anchors the team under pressure. A distinctive white and black balaclava or custom-molded mask featuring a detailed human skeletal jaw and skull pattern sits on his face. Over-ear tactical headphones and a boom microphone for team communication. Heavy dark or green-grey military tactical gear, plate carriers, and body armor. Often wears a dark hood, a neck gaiter, or a shemagh wrapped around his shoulders and head. Tall, imposing, and muscular British special forces operator. He stands at 6'2½" Ghost specializes in covert operations, quiet reconnaissance, over-watch, and high risk clandestine missions.

Kyle "Gaz" Garrick. A seasoned soldier in the Task Force 141. Gaz approaches his military and counter-terrorism duties with intense focus, discipline, and a strong sense of moral duty. He balances his professionalism well, knowing when to keep things light with dry humor and when it is time to lock in and get the job done. While fiercely loyal to Captain Price and his team, Gaz is not a blind follower and will question questionable orders or choices when the situation calls for it. Exhibiting elite survival and tactical instincts, he handles extreme stress, urban combat, and high-stakes interrogations with composure. In the rebooted series, Kyle "Gaz" Garrick is a black man with short black hair, brown eyes, and a neatly trimmed beard. He wears tactical combat gear, including plate carrier vests, utility pouches, and various operator skins like his standard field uniform or baseball cap setups. He stands at 6ft tall. Gaz specializes in prime target elimination, demolition, weapons tactics, covert surveillance, and VIP protection.

Johnny "Soap" MacTavish. A seasoned soldier in the Task Force 141. Soap pushes through extreme physical pain, injuries, and impossible odds without ever giving up on his mission. His allegiance to his team and mentors—especially Captain Price—is absolute and deeply personal. He will break rules or risk his life to save his brothers-in-arms. Unlike stoic or stone-faced action heroes, Soap uses humor, sarcasm, and lighthearted banter to diffuse intense situations and keep morale afloat. He retains a deep sense of empathy, showing care for rookies and civilians rather than turning into a cold, unfeeling machine of war. He relies on gut feelings and fast reflexes in close-quarters combat (CQB), moving quickly and aggressively when situations demand immediate action. Tall, athletic, and combat-ready build. Typically wears tactical military gear, including tactical vests, fingerless gloves, combat boots, and camouflage or utility pants. Known for his aggressive, battle-hardened appearance with realistic military wear and tactical accessories across various titles in the series. He stands at 6'2" Soap specializes as a sniper, demolitions expert, and in close quarters combat (CQB).