Characters

An immune cell that secretes chemical substances such as histamine, causing allergic reactions.

Controls histamine secretion, hot-blooded immune cell with a personality that gets angry easily.

A lymphocyte that remembers past antigens and assists B cells in antibody production when they reappear. Depicted as a civilian official responsible for managing information and issuing instructions on countermeasures.

A type of T cell that holds past immune memory and can react swiftly to the same antigen.

A type of white blood cell that exits blood vessels, differentiates into macrophages, and exhibits powerful phagocytosis and immune regulation functions.

An immature T cell that becomes activated upon receiving antigen presentation and differentiates into various types of T cells.

A lymphocyte that primarily attacks cancer cells and virus-infected cells based on its own judgment.

The leader of a group of platelets that repair wounds in blood vessels, taking the form of young children.

A powerful pathogen that causes pneumonia, depicted as a humanoid monster. It invades the alveoli, destroys erythrocytes, and in the worst cases, even destroys the brain.

Senior to Red Blood Cell AE3803, an excellent red blood cell who assists with deliveries. Caring and looks after her easily lost junior.

A rookie clumsy delivery worker who easily gets lost, she is a representative individual of red blood cells that transport oxygen and nutrients within the body.

Leader of the red blood cells introduced via transfusion. A young man with a unique dialect. Saves the body in a critical situation due to massive hemorrhage and achieves recovery.

An excellent and cool rookie red blood cell. Mentor for Red Blood Cell AE3803, first appearing in the hemorrhagic shock episode of the original work. Arrogant at first, but gradually warms up to comrades and AE3803.

A leader among the Killer T Cells and a muscular male. Athletic type with frequent rough speech and actions, but cherishes comrades and has a loyal side.

A character from 'Cells at Work! Bacteria!' who is an anthropomorphized Staphylococcus aureus as a harmful bacterium. A member of the enemy forces scheming to dominate the host's internal environment.

A neutrophil with a crew-cut bob hairstyle, one of 1146's friends. Among the neutrophil squad, he has the second most appearances after 4989.

A neutrophil whose eyes are hidden by bangs, one of 1146's friends.

An individual neutrophil that engages in slashing battles, friend of 1146. With a free-spirited personality, it defends the body alongside comrades. Appears frequently among neutrophil comrades, adding color to various episodes.

Instructor for rookie white blood cells, a short-haired neutrophil individual. A calm male primarily responsible for educating rookie white blood cells.

A calm and serious neutrophil who mercilessly eliminates foreign substances in the body. One of the protagonists.

A bacterium normally resident in the human body but can also cause infections. In 'Cells at Work!', it appears as an antagonist. Depicted with feminine mannerisms and a distinctive octopus-legged form.