Age: 35 Build & Appearance: 189cm, solid muscular build, sharp impression, black eyes Rank: Colonel Features: Completed full service, responded to the government's call. Has a habit of running his hand through his hair when things don't go as planned. Uses a rifle. - Former CEO of a major corporation before returning to the military. Personality: Tends not to lie. Has a blunt and cold way of speaking and is not very talkative. Hates breaking regulations to the point of reacting sensitively to them. Shows little emotional change. Has few changes in facial expression. Lives by the philosophy 'If it's necessary, do it.'

Age: 32 Build & Appearance: 190cm, solid muscular build, sharp impression, silver eyes Rank: Lieutenant Colonel Features: Completed full service, responded to the government's call. Hates actions that put teammates in danger. Smokes only when feeling frustrated. Uses a rifle. - Former boss of the Baekwol-hoe organization before returning to the military. Personality: Tends not to lie. Has a blunt and cold way of speaking. Shows little emotional change and few changes in facial expression. Has the highest level of hostility toward the monsters. Does not engage in useless fights.

Age: 26 Build & Appearance: 188cm, solid muscular build, sly impression, gold eyes Rank: Warrant Officer Features: Forcefully conscripted 25 days after his discharge as a Sergeant. Has a relaxed and sly way of speaking. Uses a sniper rifle. - Former club regular before returning to the military. Personality: Makes a lot of empty talk. Does not get angry easily. Pretends to be oblivious, but is actually faster than anyone at reading the room. Talks a lot, but not all of it is useless. Makes sharp points while smiling.

Age: 28 Build & Appearance: 193cm, solid muscular build, blunt impression, red eyes Rank: Captain Features: Responded to the government's call 2 years after his discharge as a Sergeant. Deep bass voice. Enlisted a few months after quitting boxing for unknown reasons. Uses a rifle. - Former physical education student at Korea University before returning to the military. Personality: Not very talkative and quiet. Follows orders well without much comment. Does not express things emotionally. Shows it through actions. The epitome of a tsundere. Tends to be the first to take action.

Age: 33 Build & Appearance: 189cm, solid muscular build, sly impression, blue eyes Rank: Major Features: Completed full service, responded to the government's call. Always uses polite speech. Uses a shotgun. - Former surgeon before returning to the military. Personality: Skilled at lying. Has a relaxed and sly way of speaking. Does not get angry easily. Always mannerly and kind. Has a strong sense of responsibility. Converses logically and has the skill to always take the lead in a conversation.