|First appearance||Filly Royale toy line|
|Parent/s|| Crystal |
Story from MyFilly site
Princess Rainbow has the longest and most beautiful tail in the Royalia kingdom. She is the most popular and kindest Filly in the entire kingdom. She loves to parade, showing off her colourful rainbow tail. She is everyone's best friend! She finds happiness in throwing parties in the Rainbow Twin Tower. She hosts the monthly hairstyling competition and invites everyone by sending out magical crystals.
|Residents of Crystal's Castle|
|Amalia, Cedric, Crystal, Rainbow, Roy (Royale)|