ME0808

 (credited as Red Blood Cell 3 (赤血球３) in the anime) is a red blood cell working inside the host's body. She is seen wearing a pair of spectacles in her appearance. AE3803 mistakes her for NT4201 while AE3803 was lamenting about how worried she is to be thought of as a bad senior to NT4201.

Abilities
As a red blood cell, she is a worker that is unable to protect herself. Therefore her job is to only transport goods.
 * Overall Abilities: Despite having no abilities to defend herself, she is capable of transporting goods into all corners of the body with high acceleration. She's even adept at getting through incredibly tight spaces, albeit with considerable difficulty.
 * Reversible Jacket: All red blood cells wear a reversible jacket that helps them indicate their speed when moving around in either veins or arteries. The jacket has extendable sleeves and zips up for colder weather.