Ruby is a mostly white color with some red highlights on her ears, tail tip, and paws. She has pink inner ears and a small black nose. She wears a golden band around her head with a encrusted ruby gem in the middle. A golden necklace can also be seen around her neck. She has dark red eyes with pale gray shine and short eyelashes.
Ruby's description is a reference to Angel's description.
Her design and description may be a reference to Sailor Moon.