|Affiliation||Gotei 13, Soul Society|
|Position||Lieutenant of the 12th Division|
|Base of Operations||12th Division HQ|
|Relatives||Mayuri Kurotsuchi (creator)|
Slender and youthful, Nemu has green eyes. Her black hair is pulled back into a long braid, with slightly parted bangs. Her uniform consists of a short black kimono, which extends to mid-thigh, with a white nagajuban underneath. The sleeves of her kimono are not as wide as those worn by most Shinigami, and the upper parts of the sleeves are puffed. She wears a traditional wide white obi, fastened with a red cord. On her left sleeve is her lieutenant's armband. She wears white gloves, which only cover the back of her hands and wrists, and a dark red choker.
Because she was abused and mistreated in every possible way by her "father/creator", Mayuri, Nemu is a very shy, withdrawn, and introverted individual, preferring to stay silent in her captain's presence. Her expression is almost always melancholic, and it is rare to see her smile or show any real joy in her distinctive green eyes. Despite Mayuri's seeming lack of care for her existence, she is very loyal to him, willing to badly injure herself just to give him an advantage in battle. Unlike her "father", however, she seems to have compassion for others.
Being the daughter of Mayuri, they share several similar traits. One such trait is their food preference. Nemu, just like her father, likes pike fish and dislikes onion. They share an interest in Human experimentation and their main free-time activity, which is reading every single character published in Seireitei Communication.
Nemu was created by Mayuri Kurotsuchi sometime after he became the captain of the 12th Division. Despite his brutal treatment towards her, she remained staunchly loyal to him.
During the invasion of Soul Society by Ichigo Kurosaki and his friends to rescue Rukia Kuchiki, Nemu fought Uryu Ishida alongside her father. After Mayuri lost, Nemu gave Uryu the antidote for the poison of Mayuri's Bankai for sparing Mayuri's life.