Fairies are magical creatures that live throughout the Magic Dimension. Their source of power are the light aspects of magic such as positive feelings. However, some fairies use their powers for evil. Fairies can create emotional or empathic bond with pixies, Selkies, and Fairy Animals. Fairies have the option to switch to a witch and vice versa, although this is a rare case. While most known fairies are female, male fairies do exist.
There is also a notable rivalry between fairies and witches. Their opposed natures often cause tension between the two groups, including exclusion from certain events or physical confrontation when provoked. It has been stated that witches do not like fairies because they think fairies live easy lives. Despite this, fairies and witches have been seen working together in times of hardship or realm-wide emergencies, and can cooperate after some time together. There are also significant and long-lasting friendships made between fairies and witches, even with some friendly rivalry.
All fairies are mostly human in appearance with some being composed of pure energy or resembling animals or elves.
Most fairies use their powers for good, protect the Magic Dimension from the forces of evil, and work to help others. Some fairies use their powers for evil or ally with dark forces for selfish means, and others, while not necessarily evil, stray to the dark side and do bad things, such as seek vengeance or have a lust for power.
Long ago, seven Ancestral Fairies crossed over from the Legendarium World and spread their magic throughout all the worlds the Magic Dimension, including the Earth. In ancient times, Earth was protected by Earth Fairies, but then the Wizards of the Black Circle found a way to resist the fairies' magic and absorb it and began the Great Fairy Hunt which lasted for centuries. The absence of fairy magic allowed pestilence, war, and hatred to instill upon the Earth.
Other ancient, all-powerful fairies such as the Arcadia, the first fairy, and the Ethereal Fairies, live outside of space and time. The nine Nymphs of Magix ruled the fate of the Magic Dimension and were the Keepers of the Dragon's Flame after the disappearance of the Great Dragon.
- Main article: Alfea
Fairies must attend school to become full-fledged fairies and master all their powers. To do so, most fairies attend Alfea. There, the fairies are taught and trained to develop and increase their powers and to use their powers responsibly so as to help preserve the Magic Dimension and fight against evil using light magic. Other schools include Linphea College, Eraklyon Institute, and the Golden Auditorium.
- Main article: Fairy Form
Fairies abilities are limited in what is referred to as their civilian forms and they have to transform themselves into fairies, where they can use their powers with greater ease and are able to use their magic for more attacks and spells, and they also gain wings which allow them to fly, as well as new clothes. Even though they can stay in their fairy form for long periods of time, exertion or overuse of their magic will force them back to their civilian forms.
As the powers of fairies grow, they also gain different transformations called Fairy Levels, which each gives them new abilities. The first one, the standard Fairy Level, also known as Winx level, enables the Fairies to use their power more easily than in civilian mode. Charmix gained by Fairies by overcoming their personal difficulties and boosts their powers. Enchantix is gained when Fairies save someone from their own realm and gives the Fairies many new powers, such as the use of Fairy Dust and Miniaturization. A fairy studies for three years at Alfea, one for each transformation and once Fairies earns their Enchantix and graduate, they become Guardian Fairies whose duty is to protect the home realm and the Magic Dimension from the forces of evil and all the other threats it faces.
After Enchantix, there is an infinite number of new transformations, called Higher Fairy Levels, which can be earned in specific situations, and which gives fairies new powers which make them even more powerful and allows them to help people better than Enchantix Fairies can, such as Believix, which is obtained by making people believe in magic and which gives the Fairy the ability to reach the heart of people and to make them have positive feelings.