NK Cell

Hitman of Innate Immunity

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

Quotes

  • I was just born, that's all...
  • Power surges when I laugh.
  • Fighting is my reason for existence.
  • Killer T Cell isn't weak, but that guy is even more troublesome.
  • My past is dark history.

Trivia

  • Wore goth-loli fashion in her rookie days.
  • Activates when laughing, saber glows like a lightsaber.
  • Weakens when feeling stress.
  • Multiple individuals exist and are depicted as a team.
  • Primarily uses a saber as her weapon in combat.

Alternate names

Natural Killer (NK) Cell Natural Killer Cell Killer Cell

Tags

Profile

Species
Lymphocyte
Gender
Female

Appearance

Overall appearance
Muscular woman wearing a black tank top and shorts. Carries a saber as a weapon. Activates and becomes stronger by laughing.
Eye color
Black
Hair color
Black
Distinguishing features
  • Muscular
  • Carries a saber
  • Expression becomes lively when laughing
Iconic items
  • Saber
  • Black tank top
  • Black shorts

Personality and abilities

Core personality
Aggressive
Detailed personality
Proactive in combat and sharp-minded. Sometimes teases Killer T Cells. However, can weaken under stress.
Keywords
  • Brave
  • Intelligent
  • Innate Immunity
  • Combative
  • Independent
  • Smile triggers activation
Talents
  • Attack on cancer cells and virus-infected cells by self-judgment
  • Strong innate immune response
  • Combat ability
Skills
  • Saber combat
  • Situational judgment ability
  • Smile activation for powering up
Motivation
Protect the body's normal cells. Rapidly eliminate foreign substances.
Habits
Weapon starts glowing when battle intensifies. Considers her past goth-loli era as dark history.

History

Backstory
Has a dark history from her rookie days when she wore goth-loli fashion. Now active as an aggressive, muscular fighter.
Debut date
August 19, 2018
Work title
Cells at Work
Media type
Anime
Episode or chapter
Episode 8

First Appearance

Significant event
First Appearance
Description
Appears as a muscular woman in Episode 8, playing an important role in attacking cancer cells and virus-infected cells.

Dark History Confession

Significant event
Dark History Confession
Description
Her rookie-era goth-loli fashion was described as a thick dark history.

Weapon Change from Activation

Significant event
Weapon Change from Activation
Description
Activates by laughing, turning her saber into a lightsaber-like glowing sword.

Relationships

Killer T Cell

Rival

Both have high combat abilities, frequently cooperating or clashing on-site. Can also be described as rivals forged through battle.

Helper T Cell

Ally

Receives orders from the immune system and collaborates to eliminate foreign substances. In a cooperative relationship assisting the chain of command.

White Blood Cell U-1146

Ally

Has on-site cooperation experience, can be considered a kind of ally.

Innate Immune System

Innate Immune System: operative

Media appearances

Cells at Work

Anime / Protagonist

2018 TV Series

Cells at Work!!

Anime / Protagonist

2021 TV Series

Cells at Work Movie

Movie / Protagonist

December 13, 2024

Voice cast and creators

Toa Yukinari

Voice actor
Toa Yukinari
Language
Japanese
Version or series
TV Anime Version

Riisa Naka

Voice actor
Riisa Naka
Language
Japanese
Version or series
Live-Action Movie Version (Voice)

Akane Shimizu

Creator name
Akane Shimizu
Role
Original author

david production

Creator name
david production
Role
Animation studio

Kodansha

Creator name
Kodansha
Role
Publisher

Related goods

NK Cell Figure

Item name
NK Cell Figure
Category
Figure
Availability
Regular

Acrylic Keyholder

Item name
Acrylic Keyholder
Category
Accessory
Availability
Limited