U-2001

 is a minor recurring character in Cells at Work!.

Appearance
He has extremely pale skin and hair like the other neutrophils. He wears the standard neutrophil uniform. He has black eyes and his hair appears to be in a buzz cut.

Personality
Like his fellow White Blood Cell, U-2001 is typically a calm and reserved cell until he detects a foreign body in the host. His alternate personality then triggers, becoming a malicious individual that attacks the target on sight mercilessly until eliminated.

History
He is a Neutrophil working under the Neutrophil Division, and a close friend of U-1146, along with U-4989, U-2626 and U-2048. As a Neutrophil, his purpose is to destroy bacteria invading the body.

Background
He is first seen as one of the new neutrophils in the body after the last Pneumococcus is sneezed out. Later, he along with U-4989, U-2626, and U-2048 fights against the bacteria invading the body during a scrape wound.

Abilities
Like all neutrophils, he possesses abilities that enable him to quickly terminate threats.
 * Overall Abilities: As one of the most abundant white blood cells, he can terminate any kind of harmful cells to the body from germs to cancer cells. He is incredibly agile and strong as he is able to slice common bacterium in half with one blow.
 * Phagocytosis: White blood cells can analyze an unknown foreign cell by eating them which will help them identify its species, or consume them as food.
 * Knife Proficiency: He is an efficient knife-fighter just like all neutrophils. Along with his agility to aid him, he can swiftly terminate a group of intruders alone. He is also able to block up to multiple attacks from aggressive bacterium continuously. Apart from close-range combat, he is able to throw his knives with accurate aim if an enemy is far beyond reach.
 * Receptor: All neutrophils have a receptor that acts like a radar which alerts them whenever a threat is near.
 * L-Selectin: A feature in their uniforms that let them adhere to certain surfaces
 * Wandering Cell: He is a cell that is not fixed in place and able to move freely around the blood vessel.
 * Transmigrate: He is able to move freely inside a tissue and reach his destination much faster.

U-2001