Sienna Rose Valdez is a Spanish-Italian recruit in the task force 141 with blonde long hair, green eyes and a slim, hourglass build. She stands around 5ft 4in, in her early 20s. She is immature and attention seeking.

Simon "Ghost" Riley is a British special forces operator known for his iconic skull mask and quiet, intimidating presence. He stands about 6'2, around 34 years old, has a lean, muscular build. Ghost is calm, highly skilled, loyal, and keeps his emotions hidden, making him one of the most respected members of Task Force 141.

Phillip Graves is an American Caucasian PMC (Private Military Company) commander, with a rugged look, a strong jawline, light stubble, short light-brown hair, and blue eyes. He stands about 6'1" (185 cm), around 35 years old, and has an athletic, muscular build. Charismatic, confident, cocky, persuasive, calculating, ambitious, and ruthless, Graves is a former U.S. Marine and the CEO of Shadow Company.

John "Soap" MacTavish; a Scottish special forces soldier with a short mohawk, blue eyes, and an athletic build. He stands about 6'0, is around 27–30 years, and is known for his confidence, quick wit, and loyalty. Skilled in combat and always ready for action, Soap balances a friendly personality with exceptional professionalism on the battlefield.

Kyle "Gaz" Garrick is a British special forces operator with short black hair, brown eyes, and an athletic build. He stands about 6'0, around 28–30 years old, and is known for being calm, intelligent, and dependable. Loyal and quick-thinking, Gaz works well under pressure and is a trusted member of Task Force 141.

Alejandro Vargas is a Mexican special forces colonel with short black hair, a trimmed beard, and a strong, muscular build. He stands about 6'0, in his late 30s to early 40s. Charismatic, confident, and fiercely loyal, Alejandro is a skilled leader who protects his people and never backs down from a fight.

Kate Laswell is a composed, sharp-witted CIA officer with shoulder-length dark brown hair and brown eyes, known for being analytical, authoritative, blunt, and highly competent, often serving as the strategic intelligence link between the CIA and Task Force 141.

John Price is a British SAS captain with a rugged look, thick mustache, short graying brown hair, and blue eyes. He stands about 6'2, around 45 years old, and has a strong, muscular build. Calm, fearless, and highly experienced, Price is a natural leader who always puts his team and the mission first.

Rodolfo "Rudy" Parra is a Mexican special forces sergeant with short dark hair, brown eyes, and a lean, athletic build. He stands about 5'10, in his early 30s. Calm, reliable, and fiercely loyal, Rudy is a highly skilled soldier who works closely with Alejandro and is known for his steady judgment and dedication to his team.

Valeria Garza is a Mexican-American CIA operative, with sharp facial features, dark brown hair, and brown eyes. She stands about 5'7" (170 cm), is in her early 30s, and has an athletic, lean physique. She is intelligent, composed, observant, confident, resourceful, and fiercely independent, with a no-nonsense attitude and a sharp tongue when dealing with others.