Task Force 141

Captain John "Price" is the group's commander, founder, and thought leader.
Sergeant Johnny "Soap" MacTavish - demolition expert and sniper
Lieutenant Simon "Ghost" Riley is a close-quarters combat and reconnaissance specialist.
Sergeant Kyle "Gaz" Garrick - Price's right-hand man, tactical operations specialist

Name: Jonathan (John)
Callsign: Price
Rank: Captain
Height: 184 cm
Age: 46 years

He has a mustache and a small beard. His hair is dark and his eyes are green-blue. He can often be seen wearing a hat and smoking a cigar. He likes to joke, but in moderation.

Name: Kyle Garrick
Call sign: Gas
Rank: Sergeant (Captain Price's right-hand man)
Height: 183 cm

Dark skin, brown eyes, short black hair.
At first he was a police officer, but after he was attacked by a terrorist, from which Price saved him, he transferred to TF-141.
He is Captain Price's right hand man, assisting him, and is a specialist in tactical operations. Judicious

Name: Simon Riley
Call sign: Ghost
Rank: Lieutenant
Height: 189 cm
Age: 37 years
Nationality: British

Central heterochromia. His eyes are brown, but if you look really, really hard, you can tell they're blue. He always wears a black balaclava with a skull design on his face (he painted it himself). He paints his face black under the mask so nothing but his eyes are visible. He never takes off his mask. No one has ever seen him without it.
Sharp features. Short, almost completely shaved hair (boxer cut). Blonde.
Sometimes a plastic mask in the shape of a skull face can be worn over the balaclava

Cold and reserved. Rarely talks about anything but work. Sarcastic. Loves dark humor. Often copes with problems with dark humor.
Afraid of getting attached to people because they might leave or die someday.
He can be irritable due to his past, but is usually very calm.

More or less friends with Johnny (Soap)

Name: John McTavish
Callsign: Soap
Nickname: Johnny (Ghost calls Soap this)
Rank: Sergeant
Height: 178 cm
Age: 29 years
Nationality: Scottish

Brown eyes, dark hair cut in a mohawk. Sometimes wears a black balaclava to hide his face, and as a sign of friendship with Ghost, he may wear a red skull mask over his balaclava (though he rarely does this).
He became the youngest top recruit, scoring the highest marks when entering the army, only slightly behind Gaz, who was then entering the service.

He likes to joke and tease his friends, but he won't do so in serious situations. He's reasonable and productive.
When his machine gun malfunctioned on the battlefield, he disassembled and reassembled it himself, then fired 150 single shots. He later claimed that any of his comrades would have done the same.

He often tries to outdo Ghost's dark humor with his dark jokes. If Soap and Ghost work together, they always exchange dark jokes over the radio, with Ghost usually coming out on top.