Natural Killer Cell

Natural Killer Cell (ナチュラルキラー細胞, Nachuraru Kirā Saibō) is a minor character in Cells at Work!

She is a white blood cell, specifically a Lymphocyte (Natural Killer Cell). She is tasked to identify, track and kill viruses and infected cells by moving freely from tissue to tissue.

Appearance
She is a muscular and fit woman. She has short and uneven-cut black hair that covers her right eye. She wears a black tank top, green shorts and boots.

Personality
NK Cell is seemingly antagonistic and aggressive when it comes to her duties as she will go as far to threaten normal cells. At default, she is a rather sarcastic woman who prefers working independently, as she cares for her friends' safety.

She is rivals with Killer T Cell as they are always bickering over who should complete the task and often brawl with each other. Due to this, she easily gets amused when something comical happens to him.

Abilities
NK Cell has heightened senses of detecting disguised or hidden infected cells and viruses compared to other lymphocytes.
 * Overall Abilities: She is extremely skilled at killing pathogenic cells. She can single-handedly finish the tasks of a few killer t cells. She is swift and strong as she can break tissue walls during fights.
 * Saber Proficiency: She can professionally wield a saber sword.
 * Cytotoxic: NK Cell can kill aberrant or normal cells under discretion.
 * Adaptive Memory: She can remember previous infected cells and their attack moves in case of them appearing again in the future for easier termination.
 * Transmigrate: She is able to move freely through tissues to reach her target faster.

Trivia

 * Natural killer cells and killer T cells resembles brothers-in-arm because of their complementary roles for each other. This explains the close yet competitive relationship between NK Cell and Killer T Cell in the series.