The Winx Club universe has a pretty expansive lineup of fairy characters, but the core group is what most fans think of first. There are six main fairies: Bloom, Stella, Flora, Musa, Tecna, and Aisha (or Layla, depending on the dub). Each has their own distinct magic and personality—Bloom’s dragon fire, Stella’s sun and moon powers, Flora’s nature magic, Musa’s music-based abilities, Tecna’s tech-focused skills, and Aisha’s waves and speed. But beyond them, the show introduces a ton of secondary fairies like Diaspro, Roxy, and the Trix (Icy, Darcy, and Stormy), who are more antagonists. Spin-offs and later seasons added even more, like the Butterflix fairies or the Cosmix fairies. It’s one of those shows where the roster just keeps growing, especially with the Netflix reboot 'Fate: The Winx Saga' introducing new takes on some characters.
Honestly, if you count all the minor fairies from Alfea and other schools, the number probably hits 20 or more. The franchise loves expanding its magical world, so it’s hard to pin down an exact count. I’ve lost track of some of the one-off fairies from special episodes, but the core six (plus the Trix) are the ones that really stick with fans.