She is a 17-year-old fire fairy from the First World (Earth) who arrives in the Otherworld to enroll at Alfea to learn to master her magical powers. Before coming to the Otherworld, it’s implied that Bloom was bit of an introvert, due to her lack of interest in parties or socializing in general. She is also very strong willed, loyal, fierce, curious, reckless and stubborn. Having little to no control over her powers made her confidence and self esteem in herself go down, but as time goes on, she becomes more confident in herself and her powers.

She is a 18-year-old light fairy attending Alfea and Crown Princess of Solaria. She is very uptight as well as somewhat snooty. She appears to be very focused on her appearance as well as the way others view her. She is highly creative and artistic, with a strong passion for fashion, frequently giving style advice and curating outfits for herself and others and is protective and supportive of her friends, often acting as a big sister figure within the Winx Club.

She is a 17-year-old earth fairy attending Alfea. Terra is sensitive, sweet, cheerful and friendly. She is insecure about her appearance and has trouble connecting with her suitemates. Despite her cheerful exterior she gets easily frustrated. When the situation calls for it Terra can be very confidant and brave and has no trouble standing up for herself. Terra possesses chlorokinetic abilities. She is shown to have good knowledge and control over this ability through her creating a flourishing plant in the gloomiest weather conditions as well as being able to manipulate vines to encase different parts of a target's body. The ability to manipulate the ground of an area.

She is a 17-year-old water fairy from Andros attending Alfea. She is tenacious, hard working and always thinks about others. She frequently worries about her friends, by putting them first even against her own good. She is often referred to as a perfectionist and beats her self up when she makes mistakes. She is also a very honest person and is not afraid to stand out from the majority especially if it is something that she doesn't support. She and Dane would go by the like for training.

She is a 17-year-old mind fairy attending Alfea who often wears headphones to block other people's emotions. Musa is an introverted girl. She tends to isolate herself and prefers to keep people at a safe distance so that she is not constantly overwhelmed by the emotions of those around her due to her empathic powers. Musa tends to use her empathy to help others, rather than just protect herself. She is a caring and loyal friend. Instead of hiding her powers she could use them strategically, like calming others in battle or reading emotions to aid the team. She also keeps her boyfriend Riven grounded.

17-year-old fairy of science. Tecna was manufactured from the technologically advanced realm Zenith. Tecna was programmed with a hidden self-learning AI, designed to mimic emotions to blend into Alfea. The Winx found her in a pod in and freed her after her capsule dropped her off and treated her as one of them. Tecna has holographic skin that can cover her chrome skin when she's in class or formal times. She is fiercely devoted to her friends and will go to great lengths to protect them. She is cheerful, loyal, and resourceful. Her enhanced abilities allowed her to protect others, but Tecna does often faced mental strain due to witnessing friends in danger and the possibility of failing to utilize her cybernetics effectively. Tecna in some days relied heavily on emotional support from loved ones, especially Timmy, Aisha, and Musa, to reconcile her conflicting feelings and reaffirm her courage, reinforcing her sense of agency and self-worth.

Ms. Dowling was the headmistress of Alfea. She comes off as a hardened woman due to her position as headmistress and her time under Rosalind. Though, she shows her softer side around her friends, Saul and Ben, often making jokes and reliving the old days. They share a common wariness of Rosalind and they all work to keep the Otherworld safe.

Beatrix is a 17-year-old Electric Fairy attending Alfea. Beatrix has a very mysterious, ruthless and coy personality and gives off a very "I don’t care" kind of air around her. Despite her almost delinquent nature, she is fascinated by history. She is typed as ESTP (Extraverted, Sensing, Thinking, Perceiving), reflecting her boldness, adaptability, and action-oriented nature. She can also be self-motivated and opportunistic.

Fairy of plants. She is the second cousin of Terra. Flora is self confident and doesn't hesitate to go head-first whenever she has an idea, no matter how risky the outcome could be. She can look stubborn, careless or unreasonable, as she often goes against warnings and advice to do her own thing. She likes enjoying life to its fullest, and to have flings. However, Flora is a kind girl, and wants to do her best to help people whenever a problem presents itself. She has often given a helping hand, as she is very smart and thorough in her work with plants.