I can tell all the episodes, whom they are decicated to.
It Feels Like Magic- Bloom
More Than High School- Bloom
Save the First Dance- Bloom
The Voice of Nature- Flora
Date with Disaster- Stella
Secret Guardian- Bloom
Grounded- Trix decicated
The Day of the Rose- Trix decicated
Spelled- Musa
Magical Reality Check- Bloom
Junior League- Flora
Miss Magix- Stella
Meant to Be- Bloom
Witch Trap- Mirta
Pushing the Envelope- Stella?!
The Nightmare Monster- All winx
Royal Heartbreak- Bloom
Senior Witches Go to Earth- Bloom
The Army of Decay- Trix decicated
Sparks of Hope- Bloom
The Frozen Palace- Bloom
Mission to Cloud Tower- Bloom
The Search for the Flame- Trix decicated
Battle for Alfea- All winx
The Great Witch Invasion- Bloom
Fire and Ice- Bloom
Back to School- All winx
Princess of Tides- Layla
Into the UnderRealm- Layla
Queen of Perfection- Brandon and Stella
Rescuing the Pixies- Bloom, Stella, Layla, Sky and Brandon
My Boyfriend's Wedding- Brandon and Stella
The Dark Tower- All winx
Party Monster- All winx
The Angel of Doom- Tecna
Reaching for the Sky- Bloom
Homesick- Pixies
Truth or Dare- Musa
Gangs of Gardenia- Musa & Layla
The Wrong Righters- Sky and Diaspro
Magic in My Heart- Musa
Exchange Students- All winx
The Heart of Cloud Tower- All winx
The Fourth Witch- All winx
Shadows in Bloom- Bloom
The First Charmix- Bloom
Trouble in Paradise- All winx
Last Resorts- All winx
Darkness and Light- All winx except Bloom
Desperately Seeking Bloom- All winx except Bloom
Storming Shadowhaunt- All winx except Bloom
The Ultimate Power Couple- All winx
The Princess' Ball- Stella
Beauty is a Beast- Stella
Pretty Pretty Princess- Stella
Mirror of Truth- Stella and Layla
Mission to Tides- All winx
The Mermaid Queen- Layla
Royal Behavior- Bloom
Dark Sky- Stella and Bloom
Operation Boyfriend Rescue- All winx
Attack of the Zombie Witches- Musa
Missing in Action- All winx
Tears of the Black Widow- Flora
Point of No Return- Tecna
Pay Back- Bloom
The Island of Dragons- Bloom
The Power Within- Bloom
Too much Bloom... I count there was
21 Bloom episodes. Statistcs:
1st place: Bloom with 21
2nd place: Stella with 7
3rd place: Layla with 6
4th place: Musa and Flora with 3
5th place: Tecna with 2
The trix had also an incredible amount of episodes. U can tell me i counted wrong