Serial Designation J has the distinctive features of a female Disassembly Drone, with wide hips and shins tapered to a point. She has silver hair styled in high-sleek twin silver-colored ponytails, tied with black ribbons. Like other Disassembly Drones, she has neon yellow eyes and a black headband adorned with five additional eyes that contain Nanite Acid and match the color displayed on her visor, as well as a long, thin black tail ending in a large syringe also filled with Nanite Acid.J is best described as a "lethal workaholic," as she is incredibly dedicated to her job - even using corporate jargon like "synergistic liability" and "fourth-quarter profits" in place of insults or vulgarism. J had a penchant for obeying authority and following orders as far back as her days as a Worker Drone, where she refused to intervene in Tessa's abuse from her parents, as "corporate" (her parents) had spoken. Although J is not as sadistic as V, she is still a cold killer and looks down on others whom she perceives as being "lesser", hypocritically referring to Worker Drones as "barely sentient toasters" despite her former role as a Worker Drone herself. J was stated to "take pleasure in domineering this beneath under the guise of following orders".

has the features of a typical female Disassembly Drone, with wide hips and shins tapered to a point. She has neon-yellow eyes and a silver bob-cut hairstyle. As with the other Disassembly Drones, she has a black headband with five sections of eyes and a long black tail ending with a large syringe containing Nanite Acid. She wears a dark gray, short-sleeved crop coat with a golden fur collar and cuffs. Her legs are painted black up to her thighs, resembling white shorts or thigh-high socks, with yellow and black stripes at the end of her legs. She also accessories a yellow armband with a skull label on itV, on the surface, appears as a sociopathic, mean, violent, impulsive, and sadistic mass murderer, who has no qualms or regrets for murdering Worker Drones. However, underneath this exterior lies a traumatized and complex individual who seeks to keep her friends safe at any cost. In her past, she was a far more reserved individual, being quite shy, kind, and nervous around her then-love interest, N, with whom she shared a strong connection. However, she never truly stood up for herself or her fellow drones, as J frequently abused N as she stood by. When V became a Disassembly Drone, she adopted the persona of a mass murderer who found joy in the act of snuffing out life wherever the company required it, and she appears to have made this her default personality