Jyudenkun is the only character in FRAME ARMS GIRL, a content that transforms FRAME ARMS mecha into bishojo, who is not a bishojo.

Moreover, Jyudenkun's gender is unspecified (not mentioned), so we don't know if it's a female (if it's female, we're truly sorry).
Jyudenkun appeared first in the anime version and serves as a charging unit for the FRAME ARMS GIRLs.
It facilitates charging by transforming into things like a chair or a bed, essentially working hard to assist with charging.

Although it generally doesn't speak, it has a self-sufficient AI, and is capable of fetching weapons upon command or performing unique actions like wrestling; it's often shown to have good judgment.

Jyudenkun, who had been a support unit solely in the anime, will finally be released as a Plastic Model as well.

This makes it easier to replicate scenes from the anime.