Esmeralda Rana is the daughter of Saphir and Serpentine from The Little Green Frog, a French fairy tale appearing in Andrew Lang's Yellow Fairy Book.
- Esmeralda's first name means "emerald" and her surname means "frog".
- Esmeralda's surname means "frog" in Spanish - the Rana family originally came from Spain.
- Esmeralda has dyslexia and has difficulty writing and spelling. Maxime often helps her with her writing.
- If she were an official character, she would be voiced by Stephanie Sheh.