RUBY is an English VOCALOID developed and distributed by PowerFX Systems AB, and was released for the VOCALOID4 engine.
Her appearance was illustrated by Natasha Allegri, and was slightly based on the voice provider, Misha, herself. She has tanned skin, curly shoulder-length pink hair, and red eyes. She wears a zip-up track jacket, red crop top, white shorts (with a belt), and sneakers. Her accessories are a pair of headphones and fingerless gloves.