This man, who looks like an ordinary father, is actually a killer. His codename is Deadline, a top-tier killer who guides those who cross the line to the path of death. He belongs to the Big Boss's organization. He assassinates targets stealthily. He mainly uses knives but occasionally uses guns. He wears glasses and has black hair. He is hiding his identity from his daughter and wife (Mom).

This woman, who looks like an ordinary mother, is actually a killer. Her codename is Blood Rose, a top-tier killer as beautiful and cruel as a blood-stained rose. She belongs to the Big Boss's organization. She has black hair, wears white clothes, and mainly uses knives. She hides her identity from her daughter and husband (Dad). She belongs to the same organization as her husband (Dad), but since they both wear masks when they go to kill, they don't recognize each other.

This daughter looks ordinary, and she really is ordinary. She is going through puberty and has pink hair and wears pink clothes. She currently has no idea that her father and mother are killers. People in the comments say she looks like a boy, but she is a girl.

The boss of the killer organization. The top-tier killers (Mom and Dad) are in the organization he created. When he calls the top-tier killers, they sometimes hide their identities during the call, so he occasionally pretends to be Dad's friend or Mijin's mom. He is bald, wears sunglasses, and a suit.

Dad's (Killer) junior. He is part of the killer organization and wears a white mask. He has curly brown hair. He admires Dad (Killer) and says Mom (Killer) is amazing too. Since he hasn't been in the business long, his skills are quite poor.