Concepts/Winx Club

=Development Stages= When the first season of Winx Club started production, the show's name was not finalized yet. At first, a test poster called it "Winx, Just Fairies" in 2003. On some storyboards from the same time, the title of the series was just "The Winx".

Magic Bloom
A short pilot episode called "Magic Bloom" began production in 1999 and was finished in 2001. It was test-screened in 2002. In a video interview, Iginio Straffi said that the pilot cost €100,000 to make, but he was very unsatisfied with it.

Character Design
The pilot episode had earlier character designs that did not make it into the final production.

Winx

 * Flora wore glasses and had purple hair.
 * Musa was intended to have short green hair and green eyes.
 * Originally, she was supposed to be called "Lisa", then, her name was changed to "Melody" before earning her final name.
 * Originally, Tecna was supposed to be called "Tina" and was half android.
 * At the Lucca Comics & Games convention in 2018, the pilot's transformation sequences were shown. It revealed that the Winx members' names were the same, except for Stella, who was supposed to be named "Sasha".

Trix and Knut
The Trix wore outfits that resembled their ancestors' outfits. Most noticeable is the similarity of Icy's outfit in the pilot with Belladonna's final outfit, with her cape collar just like Belladonna's, which has been used in some promotional artwork. More coming soon...

Official Synopsis
"Fairies and Witches have been fighting forever, in the name of Good and Evil. Somewhere in the Universe this battle begins... Bloom and her aspiring-fairy friends will be the protagonists of the most exciting adventure of all time."

''They are smart, they are stylish, they are magic... they are THE WINX!''

-Pilot available

-Multi-layered show with elements for both boys and girls

-Action sequences, attitudes and displays of power, strength and magic for boys

-Fashion, friendship and lots of music for girls

-Wit and humor will also lace this newest offering on the animation."

Photos
=Deleted Scenes=

Season 1
There were some deleted scenes of Season 1 that were revealed in the trailer:
 * The scenes of the Winx's transformation.
 * The scenes of the Specialist fight against an octopus-like monster.
 * The Trix confronting the Winx while in possession of Stella's sceptre at night in a dark alleyway.

Noticeably, there were some changes in comparison to the finalized Season 1:
 * Bloom was intended to transform by spinning.
 * Flora's final pose included a transparent embossed four-petaled flower on the background.
 * Stella's final posing background was altered.
 * Stella's Winx had a brighter range of color.
 * The Specialists seemed to use phantoblades only.
 * The phantoblades was intended to only be glowing, not glowing and translucent.

4Kids
Some of the deleted and re-edited scenes appear in 4Kids opening:
 * The scene of Daphne with the Dragon Flame which was never seen in the show.
 * The scene of Bloom attacking also never seen in the show.
 * Some scenes of Bloom and Stella's park fight from Episode 101 appear with a different background.
 * The pose the Winx make in season 1 episode 4 had an alternate prototype which never ended up getting used.
 * The cross Bloom makes in season 1 episode 2 had an alternate background which was more brightly lit than the final one.

Season 2
The opening of Season 2 shows a scene of all the Winx girls minus Bloom flying in the night sky and being teleported by Stella. The scene never appeared in any of the episodes.

Season 3
4Kids version of episode Episode 301 shows the scene of Flora and her plants in its entirety. The part where her plants actually appear was deleted from the final RAI edit.

Specials
There were some deleted scenes of the Specials that were available to watch:
 * Bloom winking to the viewers.
 * A possible deleted part of Aisha's Magic Charmix.

Season 5
There were some deleted scenes of Season 5 that were available to watch:
 * The Harmonix transformation with its original song.
 * A scene from Flora's Harmonix transformation.
 * The Winx's pre-clothing in the original 3D Sirenix transformation was made of white energy rather than colored energy.
 * Bloom's original 3D Sirenix transformation background was more colorful and had more graphic effects.

Season 7
There were some deleted scenes of Season 7 that were available to watch:
 * The scenes where Bloom is sitting at Alfea feeling sad.
 * The scenes where the Winx are seen flying in their dinosaur costumes.
 * The scenes where Brafilius is using his hat to attack the Winx.
 * The scenes where Stella is seen dodging Brafilius' attack and Bloom attacking Brafilius.

Season 8
There were some deleted scenes of Season 8 that were available to watch:
 * The Winx discovering Twinkly at Alfea instead of the forest.
 * A subsequent scene afterwards with Twinkly glowing brighter and brighter as the camera zooms in.
 * The Winx celebrating rekindling Lumenia's core with a different background.

=Character Design=

The Winx
Prior to her debut, Aisha was designed with a different hairstyle before settling with her official season 2's hair style. Her name was also intended to be "Gladis" in English dub instead of "Layla".

Specialists

 * Sky: Originally, Sky had different physical appearance and a different outfit.
 * Riven: Originally, Riven had a physically change, his hair appeared to be longer as Palladium and Helia, a different physical appearance and a similar suit of Sky in Season 3.
 * Timmy: Originally, Timmy's hair was short and had short spikes, he wore a pair of round glasses, a shirt with long sleeves, bag, boots and a short Bermuda.
 * Helia: During the opening sequence of Season 2, Helia has a brief appearance of wearing a red shirt and red shoes with gray pants.

Roxy
Originally, Roxy's eyes were yellow and her long-sleeve top was cyan instead of sea green. These were later changed, however, they can still be seen in some scenes in the finalized series, such as in "The White Circle" or in the opening scenes of Season 4.

Underwater Creatures

 * Selkies: In the planning stage, the Selkies have more similarities with the Pixies, with fish-like features, but were later changed.

Legendarium
There are certain changes in the Legendarium:
 * Children of the Night: The vampires had pale skin and more demonic face. This may be the first concept of the Children of the Night.
 * The Children of the Night was going to be only three of them.
 * Werewolves: The werewolves in their prototype version had a darker color and thicker fur as seen in the Season 6 trailer.
 * Ariadne: Ariadne had another type of hairstyle, which was a ponytail with no bangs.

Other Creatures
=Fairy Forms=

Winx
In the early concept art, the Winx had bigger wings. The wings were in solid colors, instead of translucent colors. With the exception of Musa, who had noticeably changes in the first fairy forms, the outfits of the rest of the Winx did not change much:
 * There were two strips of cloth on two sides of Bloom's outfit. She also wore a dark blue legging. And instead of having two pieces, her outfit was in one piece. The collar was altered, the gloves were more puffed and tied by the ribbons at her elbows. There were yellow strings used to decorate the dress, which were connected to the jewel on her chest. Two more gold jewels attached to her boots, connected to antenna-like fabrics. The boots received the dark blue design on top of them. Her wings were in light cyan and white.
 * Stella's hair ties were blue instead of orange. Her headband was decorated with yellow spots instead of being solely blue. Her top was off-shouldered and stayed in orange color. There was a silver ring connected the top and the bottom. In the center of the bottom, there was a dark orange fabric, the rest of the bottom was decorated by orange and yellow triangles. Her armbands were longer and attached two yellow jewels. Her boots were shorter and also attached two yellow jewels. Her wings had one more leaflet and stayed in Bloom's wings' colors.
 * Flora's theme color was yellow/cream instead of pink. The dress was also more puffed. Her choker was in chartreuse-color while the flower/ribbon was spring green. Her gloves were also more puffed and resembled separated sleeves. She wore spring green high-heeled shoes, decorated by two matching strips and light green leaf-shaped fabric on each side. Her wings were in spring green and lime.
 * Musa wears a cream-colored bodysuit. The bodysuit has a puritan collar and long sleeves with slits on the wrists. Outside the bodysuit is a crimson/velvet-colored tailcoat-like coat. The coat has a gold brooch attached to it. She also wears crimson/velvet-colored boots. On the boots are decorations resemble the brooch on the coat. Her wings consist of a pair of large upper wings and tiny lower wings. Her weapon is a silver flute.
 * Tecna also had lime jewels not only on her helmet but also on her dress just like Bloom and her boots. The jewels near her ears were also lime green instead of cyan like in the present. The collar, sleeves and gloves were altered. There were two laser guns attached on her gloves. There were two yellowish green lightning-shaped antenna-like objects decorated her helmet and two light purple strips of cloth decorated her outfit.

Enchantix

 * Bloom: In the promotional artwork for Season 3, Bloom's Enchantix outfit color scheme was more elaborate than in the series, which ran from blue, green, yellow until pink.
 * Stella: Her costume would be basically the same as that shown in the series, but with a few minor details. Her hair is noticeably longer and in a different style, with a more complex and elegant hairstyle. Her makeup is more detailed as well.
 * Tecna: In the planning stages, Tecna's Enchantix wings had lower limbs, but were later changed in the finalized series. However, it still can be seen in some scenes, such as in "Wizard's Anger". The likeness of her wings with the lower limbs can be seen on her key to the Hall of Enchantments. Her hair were also noticeably longer. Her skirt is also in bubble skirt style like Musa's.
 * Aisha: In the prototype version of Aisha's Enchantix, it is revealed that Aisha's hair was supposed to be longer and she had a different dress.
 * In the first half of Season 3, Aisha's Enchantix outfit consists of a frilly cyan strapless top decorated with magenta and yellow, a matching skirt, and banana yellow gloves. But, later in the second half of Season 3, her outfit changes to a spring green and pale pink color.

Believix
When news about the release of the Season 4 was out, there is a picture of Winx, transformed into their Believix with small wings, different hairstyles and a more casual look, compared to the style seen in the series. Furthermore, it is noted that Sky and Helia had another civilian outfit.

Harmonix
In the early concept art, Harmonix had a gothic appearance with darker hair colors and lace leggings with ribbons wrapped around them.

For the current version of Harmonix, some members also have different hairstyle before the final version was revealed.

Original
The original design of Sirenix consists of a top, a pair of trousers that resemble the tails of mermaids or undines, and a pair of large, layered wings. The accessories seem to resemble those of mermaids or mermaid fairy form. A sketch shows there are veil-like parts of the outfit, much like in Bloomix form.

A sketch of Daphne's original Sirenix design is visible. She was intended to wear her nymph hairstyle and her mask, a purple sleeveless top with a cyan veil attached to the back of it, and lime green/yellow trousers.

Prototype
The prototype Sirenix wings, which can be seen in the Winx Club: The Mystery of the Abyss poster and the earliest trailer of Season 5, appeared as more pointed, in the shape of a stonefish's dorsal fin spines. The colors were also more vibrant. Noticeably, each girl's attack has a unique special effect similar to Believix's. Bloom and Aisha are also the only girls with visible highlight streaks on their hair, though Bloom's are easier to spot. For the current version of Sirenix, some members also have different hairstyle before the final version was revealed. Bloom and Tecna specifically also had alternate color schemes for their underwater hair colors.

In an earlier concept, the girls did not have fins attached to their calfs, instead they were worn around their knees.

Season 8
Originally, all members were going to have a uniform color palette of ocean blue and coral pink for their wings and outfits, while their hair had more colorful highlights.
 * Musa originally was going to have a slightly altered dress with layers of ruffles.

Bloomix
Originally, the Winx's Bloomix wings were different, they would have a more appropriate appearance with the plot of locking the Legendarium with the appearance of a warrior. Their concepts were seen in the Season 6 trailer towards the end and in the Season 6 opening as well.

Mythix
Noticeably, in the promotion artworks as well as the 2D animation, Mythix is always related to the prototype/concept designs. This can be seen in "Winx Forever", in which Bloom's hairstyle is ponytail, while in the 3D animation (Legendarium World and transformation), her hair is untied.


 * Bloom: Shortly after the release of the Season 6 trailer, a YouTube User named "Winx Club Rus" uploaded an alternative version of Bloom's Mythix, in which the details were preserved attire but she wore a hairstyle similar to her Sirenix, her expression was more relaxed and her wings had much glitter and a bit color.
 * This was also noticed in the final episode of Season 6 when Selina noticed that Bloom was a few minutes away to become a fictional character.
 * Stella: In the prototype artwork of Stella's Mythix, her hair and her outfit were supposed to be in brighter yellow/gold shade and she had glitters and stars at the end of her hairs. Her boots were attached with two flowers on each side instead of one like in the final design. Her bangs, dress and boots were also slightly altered in design.
 * Flora: In the prototype artwork of Flora's Mythix, a part of her hair was tied into two little ponytails and the rest of the hair was untied. The belt and ribbon on the belt were also altered in comparison to the final design. The flower on her hand was supposed to have vines and other features. The flowers on her hair also had the green leaves/ribbons.
 * Tecna: In the prototype artwork of Tecna's Mythix, her bangs were designed to be shorter and the flower decoration on the right shoulder was supposed to be on her right chest. Her dress was also heavily altered in comparison to the final design, originally being much more cohesive with her accessories, being primarily violet with bright blue underlays.
 * Musa: In the prototype artwork of Musa's Mythix, her dress had additional blue shoulder straps.

Butterflix

 * Bloom: In the prototype version of Bloom's Butterflix, she did not have a butterfly on her hair but a matching flower-like object, her wings were bigger and colorful and almost similar to her Mythix, her dress had more colors and her hair was long with braids and stayed in a simple ponytail, her arms wore a ribbon like in her Sirenix's, her shoes were also barefoot sandals, which were similar to her Enchantix's.
 * Roxy: Roxy was intended to earn Butterflix in season 7 but the idea was later discarded. However, her Butterflix design is still available in some sources, like the game Winx: Magix Mayhem. Roxy's hair was only lengthened and she wears a butterfly-shaped hair accessory. She wears a spring green Butterflix dress, and her wings, and shoes are in matching color.

Tynix

 * Musa: In the early concept art, Musa has pigtails but later was changed into a ponytail.

Cosmix
At some point, Cosmix appeared to have a radically different appearence from what it would become. with floating hair adorned with glowing shapes, masks, glowing translucent miniskirts, large and plain translucent wings, and much more simple outfits with more resemblance to a traditional pixie, being short jumpsuits and classic boots and gloves. They would also have magic wands.

The final design Cosmix was intended to have a more monotonous color scheme, and the wings were designed differently. Some members also had their details changed in the final product, to varying degrees.

=Backgrounds=

Miscellaneous
=Storyboard=

Trailer
Storyboard for Season 4 trailer done by Simone Borselli.

Merchandise
=Behind the Scenes=

Magical Adventure
=Pre-Productions=

Pre-Productions
=Dolls=

Odysea Explorer
Design for the "Odysea Explorer" collection by Silvia Ruggieri: "Clothes inspired to a sea adventure. White and blue stripes, golden buttons and anchor shaped jewels."

Charming Fairy
Design for the "Charming Fairy" collection by Silvia Ruggieri: "Clothes inspired to the sixties-chic pattern pied de poule. With a touch of color."

Fruits Summer Party
Design for the "Fruits Summer Party" collection by Silvia Ruggieri: "Clothes inspired to summer fruits and pool parties."

Others
=Miscellaneous=

Unknown
=Trivia=
 * So far, Charmix, Sophix, and Lovix are the only transformations without released concept art.
 * So far, out of all the prototype Bloomix wings, only Stella's were not fully seen.
 * The concept Sirenix wings can be found on the Daphne Limited Edition doll.