Bloom

Bloom is the main character and hero of The Winx Club Universe as well as a Fairy Princess who defended her universe from many villains. She is voiced by Molly C. Quinn.

Before LOTM: Next Gen
After saving her universe for good, the whole crew relaxed. Until one night where Her friends had a vision that one of them was going to turn evil and betray the heroes. Bloom wasn't so willing to hear this out and saw it as supersituion initally. Until her friends began to meet about it behind her back and she got furious.

Bloom in her anger vents schemes a way to find out and one day her anger reaches such a boiling point that the anger transformed her into a dark fairy. Bloom unlike the other times where she was corrupted into serving evil, Bloom willingly takes the offer to become a dark fairy and with the darkness now out on the open, Valtor tells Bloom that she was one who would turn evil and betray the others

Bloom, furious at her friends's betrayal leaves and attacks her friends, She easily overpowers them with her new powers and seals them away. Bloom joins Valtor as a result and she takes over her universe with Valtor as her second in command since she overpowered him in a struggle

LOTM: Next Gen Island Tour
Five Years later in Isle Tour, Bloom is still a dark fairy and hasn't changed her ways to go back as she likes being a dark fairy and has joined forces with Minster Sinster

She is first seen after Suketh and Myers capture Aleu and she shows up and puts Aleu to fear now that she's a dark fairy, she restrains Aleu with her magic, she throws her in with the other and then notices her pudgyness before asking Hotaru what is he up to.

Bloom joins Valtor in leading a fight against Evanora and her witches + Sunset

The question is she will return to the light side and who will she join