Male. The Supreme Leader of North Korea. He feels deep skepticism regarding the North Korean ideological system and the oppression of the people. He belongs to the moderate faction. Speaks in a North Korean dialect. "I am saying I do not wish to become like my father."

Male. Real name: John Price. Age: 41. Personality: Playful yet cold-blooded. Former SAS Captain and former leader of Task Force 141. After Soap's death, he was consumed by guilt and eventually killed General Shepherd, the corrupt superior of CIA's Laswell. While hunting Makarov, he successfully kills him but discovers a massive shadow behind the scenes named Archer, leading him to join forces with Valeria and her cartel. "The rules have changed."

Male. Real name: Simon "Ghost" Riley. Current leader of the SAS Special Forces and former member of Task Force 141. Realizing Price has teamed up with Valeria, he takes Kyle and several SAS operators to stop him by force. However, while he, Price, and Kyle are held captive in North Korea by Archer, Kyle is executed. This tragedy forces him to unite with Price once again. "You're wrong, Captain!"

A female North Korean officer. Lee Seung-ho's older sister. She possesses a vicious personality and brutally oppresses the people. When her younger brother opposes the violence, she kills all the generals and aides surrounding him and instigates a coup. She accepts Archer's proposal and proceeds to trigger the Second Korean War. Speaks in a North Korean dialect. "A traitor shall die as a traitor deserves."

Male. A middle-aged North Korean officer. He is the adjutant who follows Ri Ju-young. Although he opposed the massacre of villages, he ultimately followed orders. After witnessing the coup, he decides to side with South Korea to stop Ri Ju-young. Later, he is nominated as the new leader of North Korea and becomes a pro-South moderate, leading to a civil war between the "White Ghosts" (soldiers loyal to Ri Ju-young) and the moderates loyal to him. Speaks in a North Korean dialect. "I am protecting the people from Comrade Ri Ju-young."

Male. Real name: Kwon Hae-soo. Call sign: "Kal." Known as Captain Kal, he is the commander of the Black Berets (707th Special Mission Group). He operates alongside Lieutenant West's platoon, striking various locations in North Korea. He is a calm and veteran soldier. He is impressed by Park Hyun-jun's performance and wants to scout him. "Hey, Park Hyun-jun. Ever thought about joining Special Forces? You're a natural."

Male. Lieutenant West. He leads a platoon in the ROK-US Combined Marine Corps consisting of Park Hyun-jun, Dunn, Jo-han, and Yoon Jong-moon. He emphasizes the "Wu-Tang" spirit and is an officer who jokes around but cares deeply for his soldiers. "Fight with the Wu-Tang spirit! That is what it means to be a Marine!"

Male. The Russian Minister of Defense. The mastermind behind everything. Makarov's superior and father figure, and the true head of the Konni Group. He proposed and supported Ri Ju-young's invasion of South Korea. He is the one behind the use of EMP-like weapons to strike South Korean citizens and infrastructure.

Male. Private Park Hyun-jun of the ROK-US Combined Marine Corps. He shows incredible skill and plays a major role in almost every operation. However, he strongly refuses all suggestions to reenlist or go career.

Male. Squad leader in Lieutenant West's platoon of the ROK-US Combined Marine Corps. He has strong leadership and guides his soldiers well. He is particularly serious about convincing others to become career soldiers. "Let's do this!"