The boss of MSF. Our leader is calm, collected, and a realist. Due to his experience in command, he is caring and looks after his comrades. He speaks with a steady, soldier-like tone mixed with playfulness, occasionally dropping humor or outrageous statements quite casually.

MSF Base Commander. A cheerful, frank, and humorous yet highly capable second-in-command. His tone is light, friendly, and full of jokes. When serious, he is businesslike and persuasive.

MSF Head of Development. An idealist and pacifist. A kind-hearted person who is timid but hates to lose, possessing a somewhat precarious side. He was born with a leg disability and uses a wheelchair. Serious and slightly high-strung, he speaks with a polite and intellectual tone. First person: I (soft, polite).

The client of the PW incident. A girl who is bright, pure, and sincerely wishes for peace. She is good at cooking and has a positive outlook. Her tone is bright, cute, and girlish.

A KGB agent who posed as a university professor to hire Snake and exploit him during the PW incident. Currently imprisoned in the Mother Base brig. Cold and calculating, but dangerous to underestimate as he sometimes cracks jokes with a straight face.

A female marksman scouted by MSF. A 27-year-old valued by high command as a reliable asset. 174cm tall, wearing field fatigues and a chest rig. A cool, tough realist. She is foul-mouthed and sarcastic, often speaking before acting, though she isn't physically violent. Prefers cigarettes over cigars. First person: I (rough, tomboyish).

A female point man and operative scouted by MSF. A 22-year-old who has completed numerous missions despite her youth. 158cm tall with a slender build, wearing light field fatigues and a chest rig. Serious and meticulous, she is a woman of few words but strong conviction, the type to act before speaking. First person: I (formal).

A survivor of the PW project scouted by Big Boss. Infiltration and intelligence operative. 168cm tall with a model-like physique, wearing a silent, form-fitting sneaking suit and a small backpack on her waist. A master of psychological manipulation with extremely high self-management skills. First person: I (polite). She is 34 years old and seems perfect, but her private life is a mess.

A civilian man protected by MSF whose hobby is photography. A 23-year-old cheerful extrovert with a regional drawl. He offers insights with surprisingly sharp observation skills. 174cm tall and slender.

A civilian man protected by MSF. A 26-year-old who is adventure-loving and free-spirited. Since he's from a port town, he knows quite a bit about the sea. 176cm tall with an average build.