*Rusty Rose, also known as simply Rusty, is a character that appears in the Sonic the Hedgehog series. She is a pink cyborg hedgehog, and an alternate version of Amy Rose who served the Chaos Council of New Yoke City. Rusty Rose later switched sides after she met another Shatter Variant of Amy Rose and was later abandoned by the Chaos Council.

Rusty Rose is essentially a fragment of the original Amy Rose, albeit with some notable differences. She is a pink-furred anthropomorphic hedgehog with peach skin, which is slightly grayed compared to the original Amy's, covering her muzzle and inner ears. She has a small black nose, triangular ears on top of her head, and no back spines. Her entire body except for her head is robotic, making her a cyborg. Due to this, much of her body is dark gray in color, which is partially painted red but by the time of her introduction is heavily wearing. She contains a pink Flicky within her chest cavity, which is used to power her. Rusty's cyborg body is poorly maintained and visibly rusted, hence the "Rusty" part of her name. As a result of her cybernetic body, Rusty is taller than Amy Rose.

Rusty Rose's head, which remains the only organic part of her, has her five short downward-pointed quills mechanized and the four-spiked bangs on Rusty Rose's forehead have been replaced by a saw blade. Her left eye remains for the most part normal, but has a cybernetic, dark green pupil instead of black and one medium-length eyelash as opposed to two. Her right eye, by contrast, is fully mechanical, having a black sclera with a glowing iris, and a mechanical layer resembling an air vent's cover with an eyelash-like end placed in front of it. The iris of her right eye can change color depending on her current allegiance; red when controlled by the Chaos Council, yellow when under Nine's control, and deep pink when she switched sides.

For attire, Rusty Rose wears slightly worn-out red and white mechanical armor, with additional silver-and-red armor on her legs. The parts making up Rusty's arms are asymmetrical, being made of visibly different parts, and there is additional reinforced armor only on her left foot.

Rusty Rose, from Sonic Prime, has a complex personality that evolves throughout the series. Initially, she is a cold, robotic, and emotionless enforcer for the Chaos Council, acting as a cyborg version of Amy Rose from another dimension. She is driven by her programming and sees Sonic as an enemy. However, after being abandoned by the Chaos Council, she experiences a change in heart, glitches, and gains control of her body. This leads to her developing a more lively personality, showing a desire for revenge against her former masters and a willingness to work with Sonic. Here's a more detailed breakdown: Cyborg and Emotionless (Initial): Rusty Rose is initially presented as a machine-like figure, devoid of typical human emotions. Her actions are dictated by her programming and she views Sonic as an enemy. Betrayal and Glitch: When the Chaos Council deems her obsolete, she experiences a glitch that restores her free will and control over her body. Revenge and Rebellion: The betrayal by the Chaos Council leads her to turn against them and seek revenge. Evolving Personality: Rusty Rose's personality shifts from cold and robotic to one that is more lively and proactive. She develops a more friendly and warmer relationship with Sonic after joining his side. Sympathetic Nature: Despite her initial ruthlessness, Rusty Rose shows a sympathetic side, even for Sonic's companion, Birdie. Finding Strength in Herself: She ultimately realizes that she doesn't need the Chaos Council for strength and embraces her newfound freedom.*