Fairy tales that i think the winx characters would fit in:
The Snow Queen:
Snow reyna -Icy
Gerda-Bloom
Kai-Sky
Snow White:
Snow white-Musa
Quin-Darcy
Princ-Rivan
Cinderella:
Cinderella-Flora
Stepmother-Stormy
Princ- Helia
Sleeping Beauty:
Princess:Stella
Witch:Mitzi
Princ:Brandon
The frog princess:
Princess:Tecna
Princ:Timmy
The Little Mermaid:
Ariel:Layla
Sea Witch:Ogron(I know hes a guy but it fits…lets say sea wizerd?)
Princ:Nabu
Thumbelina:
Thumbelina-Roxy
The nice lady- Morgana
Princ-Andy