Winx Club Forever
Callisto is the home world of the unseen character, Princess Varanda, whose name Bloom temporarily assumed at the beginning of the Season 1. In "Welcome to Magix" and in the comic "The Castle", the planet is described as the "fourth world of Magix Realm's upper/highest ring".
- Its name might derive from Jupiter's moon Callisto or direct from the mythology nymph Callisto.
- In the 4Kids version, the planet is called "Allisto".