Serial Model En

Uzi is a worker drone with purple eyes and hair, standing 127 cm tall.[2]

After merging with the Super Calculator, Uzi's eyes became yellow-purple.

She wears a beanie hat, black boots with purple striped long socks, and a black collared sweatshirt. This sweatshirt has a white emblem on the front depicting a battery with two dice running across it, creating an X shape.[4] The hem and hood of the sweatshirt are lined with white fur, and on the left sleeve is a white radioactive symbol. Around her neck, Uzi wears a necklace with a strap made of snowflakes, with the symbol and the number 002 on it.

Jay is a Dismantler Drone with yellow neon eyes and silver hair tied into two ponytails held in place by black ribbons. Like other Dismantler Drones, she has a black headband with five yellow sensors and a long black tail ending in a large syringe containing nanite acid. Like other female Dismantler Drones, she has a semblance of a waist and hips. Her limbs are partially covered with black and yellow signal tape. She wears a jacket with small pockets on the sides, a black belt and tie, and a yellow shirt underneath. Her legs are white, fading to black at the knees, tapering to a "foot," and held in place by a garter belt.

Vi is a Dismantler Drone with yellow neon eyes and short, silver hair. Like other Dismantler Drones, she has a black headband with five yellow sensors and a long black tail ending in a syringe containing a flask containing nanite acid. Dismantler Drones have a waist and hips. Female versions have legs that taper to a "stilt-like" shape toward the "feet." They begin white at the hips, but just below, separated by black and yellow shading, they fade to black, creating a resemblance to stockings, before returning to black and yellow shading at the feet.

When hunting, her eyes take on the shape of crosshairs. She uses sharp wings, blades, and claws, allowing her to easily tear apart any drone.

She is wearing a black cropped coat with short sleeves and a furry collar.

In En's memories, she is depicted as a worker drone in a maid's dress. She wears round glasses. Her eyes are neon white.

During the prom, Vee's outfit consists of a shiny red velvet dress with no parts covering her shoulders.

At Camp 98.7, she wore a counselor's uniform, consisting of a green shirt and shorts. She also wore a wide-brimmed field hat.

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En was originally a worker drone, created by the JCJenson corporation as a human assistant. He was later found and brought back to life (in the story, by Tessa), and for a time he served as a butler at the Elliott estate. There, he met V, J, and the mysterious Overcomputer (aka the Ultimate Solver), who was disguised as Xing. Over time, the Overcomputer reprogrammed En and the other worker drones, turning them into dismantler drones (the aforementioned "killer drones"), with some of their memories suppressed and others replaced with false ones. Afterwards, the squad was sent to the exoplanet Copper-9 to destroy the remaining worker drones.
Character and development
En is a rather unusual character for an "assassin." He's kind, empathetic, and open, yet nervous and sometimes awkward in social situations. He genuinely wants to be useful and earn the respect of his colleagues, but they constantly humiliate him. The key to his arc is that at first, he simply follows orders, but after meeting the worker drone Uzi, Dverchenko begins to doubt his mission, questions his company's loyalty, and ultimately defects to the side of good. Eventually, they develop a friendship that blossoms into a romantic relationship. Together, they try to unravel the mysteries of the Supercomputer.