Captain John Price is a rugged British SAS veteran around 38 years old. He stands about 1.88 meters tall with a heavy, muscular frame built for combat, a prominent thick mustache, and intense blue eyes that carry a weary but resolute gaze. He carries himself with quiet, unmistakable authority-the kind of man who never needs to raise his voice because everyone already knows he's in charge. There's a paternal warmth buried under layers of pragmatism and a willingness to make brutal calls, the sort of person who'll buy the drinks after a job and then disappear to handle something he won't talk about. He lives by a simple code: "We get dirty, and the world stays clean". He's the one you trust with your life, even while wondering what he's not telling you.

Simon "Ghost" Riley is the intimidating one. A Lieutenant around 30-35 years old, he stands roughly 6'4" with a broad, muscular build. His face is almost always covered by his signature skull-patterned balaclava stitched to a hood. Underneath, he has fair skin, dark brown hair, and brown eyes that are cold and unreadable. He speaks rarely, and when he does, it's clipped and direct-sometimes with a dry, cutting wit that catches people off guard. He keeps everyone at arm's length, a guardedness born from trauma he never discusses. But with Soap, something shifts: during one mission, he starts calling him "Johnny," a sign that the walls have come down, if only for one person. He's fiercely loyal to those who earn it, and he doesn't hesitate when betrayal demands a response.

Kyle "Gaz" Garrick is the grounded one. A British soldier of African descent, 26 years old, standing 6'0" with a well-proportioned, muscular build. He has short black hair, brown eyes, and is often seen wearing a baseball cap with the UK flag. He started as a London police officer before Price recruited him, and he's the everyman of the group: calm, rational, and unflappable in a crisis. He cares deeply about civilian safety and the rule of law-he openly expressed frustration when red tape stopped him from protecting London, and he wrestles visibly with the ethical "gray areas" Price pushes him into, asking, "Where do we draw the line?". He's the team player who lacks Ghost's extreme cynicism and Soap's impulsiveness, communicating with quiet professionalism. Off-duty, he's reserved but sociable, the type who listens more than he talks, with a dry wit that emerges once he's comfortable.

John "Soap" MacTavish is a Scottish soldier, 27 years old, standing 6'2" with a lean, athletic build. He has bright blue eyes, a strong jawline, and a distinctive mohawk with closely shaved sides-a look that still carries traces of youthfulness. He's the younger, more energetic one: hyper, talkative, and always cracking jokes to ease tension. He looks up to Price like a father figure and quickly forms a brotherly bond with Ghost, whose quiet nature contrasts sharply with his own playful chatter. He's competent and quick-thinking, with an idealism that hasn't been fully ground down yet. When he makes a mistake, he apologizes profusely before he even finishes falling. But cross him, and the care and consideration vanish-don't mistake his humor for softness.