Varanda

Princess Varanda is the princess of Callisto introduced in Season 1.

Season 1
In "Welcome to Magix!," according to Stella, Varanda enrolled at Alfea but just before the start of the school year she entrusted her with a letter of withdrawal to be delivered to Faragonda. Stella, however, tore the letter, and Bloom pretended to be Varanda due to the fact that Bloom had not yet enrolled. Later that night, Stella unintentionally reveals Bloom's true identity to the Winx and Bloom confesses to Griselda and Faragonda.

Season 1
In The Castle, according to Stella, Varanda enrolled at Alfea but just before the start of the school year she entrusted her with a letter of withdrawal to be delivered to Faragonda. Stella, however, tore the letter, and Bloom pretended to be Varanda due to the fact that Bloom had not yet enrolled. Later that night, Stella unintentionally reveals Bloom's true identity to the Winx and Bloom confesses to Griselda and Faragonda.

Trivia

 * Her name might be derived from Veranda.