Cloud Tower also has students who have names and contribute to the storyline. There are at least 60 unnamed witches in Cloud Tower. Many of them are actually minor Alfea characters as well, since a lot of character designs were recycled for the students of both schools.
Major Cloud Tower Students
- Main article: Mirta
Mirta is a former Cloud Tower student and witch, she is kind and was the only witch with a more friendly attitude towards Fairies this trait of hers stands out quite prominently from the other witches of Cloud Tower. Her sweet and shy nature makes her a target of ridicule and scorn there, except for her roommate and childhood friend Lucy.
Mirta does not think the fairies are bad, and even attempts to help Bloom on one occasion, but she pays a heavy price for interfering in the Trix's business and is turned into a pumpkin for the second half of the first season. Flora keeps the pumpkin in her room and takes care of it affectionately, trying several times to turn her back into the girl she once was. By the end of the first season, she is turned back into a girl and becomes a transfer student to Alfea. Each time the Winx go to Cloud Tower, Mirta goes with them as a guide. She is seen in Winx form in the tenth episode of the third season (however, although she also features in the next episode, she does not transform into Winx form; this has disappointed some fans and it is also unknown if she had her Charmix).
In the movie, Mirta is featured three times: when Stella, Musa, Flora, Tecna and Aisha graduates, she cheers for them; when Mandragora attacks Alfea, she takes down one of her monsters and also when the teachers, pixies and fairies restore Alfea after the battle.
- Main article: Lucy
She is Mirta's only friend at Cloud Tower. Tall, pale, and not quite as attractive as others, Lucy has self-esteem problems and desperately wants to befriend the Trix in season one (though they scorn and tease her). She appears to be a very good dancer though, appearing in the Miss Magix competition in disguise.
She and Mirta have been friends since childhood. They lose contact at the end of the first season, as Mirta transfers to Alfea, but halfway through the second season, Lucy and Mirta reconcile. They are seen dancing with Amaryl at Musa's concert and together at the end of year party during the finale of the second season, proving that they are once more friends. Lucy was part of the attack on Alfea in the third season, under Valtor's control.
- Main article: Selina
Selina is a new student at Cloud Tower during season six and is the owner of the Legendarium, a powerful book that has the ability to bring legendary creatures to life. She is/was Bloom's childhood friend and, like Roxy, is from Earth. She is quite powerful and shows pride and concern for the Legendarium.
Selina is shown to be cunning, deceiving and hardworking especially when it comes to gaining power. She is a calm individual despite losing several times to the Winx and in particular, Bloom. But, her caring and kind side is still there, like when she saw Bloom laughing with her friends and remembers how she used to laugh like that with Bloom, or when the Trix discovered Eldora, Selina stealthy used magic to prevent the Trix from learning more about Eldora.
Minor Cloud Tower Students
- Main article: Lucrezia
Lucrezia is a rather pretty witch who appears in the Winx Club comic series and once in the animated series. She is intelligent and quite popular, and at one point the experiment for a brain enhancing potion that the Trix concocted. Her name is of Latin origin and means profit; wealth.
- Main article: Shilly
Shilly has appeared in the comics and TV series as a background character who is often seen flirting with Brandon. In the comic series she is prompted by Icy to concoct a love potion to separate Brandon and Stella which she does but eventually has second thoughts and reverses the spell. She is very nice for a witch and even befriends Bloom. She surprisingly looks like Sally, a human from Earth and friend to Mitzi and Darma.
- Main article: Rachel (Blond hair)
She is another Cloud Tower witch who appears in the in the cartoon series and in the Winx Club comic series. She has short blonde hair and has a very innocent nature. In the comic series she had the unfortunate accident of getting an error in Professor Bittersmoke's potions class and being transformed into a humanoid crocodile and teased by her classmate. Fortunately the effects were temporary.
- Main article: Rachel (Green hair)
- Main article: Cersei
She is a witch with blond and black hair with tails. She wears a black top, dark red gloves and dark red and black skirt. She appears in Winx PC Game only.