Pre-Series
When Roxy was younger, she and her father regularly went on vacation to an old farm, where Roxy would ride horses.
Sometime before the events of the fourth season, Roxy was a star student in high school. Scopri i cuccioli con Roxy shows a quote from her biology teacher saying that she is a gifted biologist. Also during this time, Roxy said that she was lonely and longed for a friend before meeting her fellow fairies.
Series
Season 4
Roxy appears for the first time in "The Last Fairy on Earth" in the vitrine of the Love & Pet. She looks fondly at the one of the fairy pets. Because the shop was not officially open yet, Roxy is rudely rid of by Stella who closes the curtains. However, this did not stop her from say hello to a fairy pet. Her interest in the animal causes her to unconsciously release her magical energy, this accident was mistaken as an assault by the Wizards of the Black Circle.
Roxy is initially wary of the Winx, thinking that they are just a bunch of snobbish vain girls. She worked as a bartender and waitress at her father's bar, the Frutti Music Bar. Later, her opinion of them worsens when the Winx follow her to her personal room at the Frutti Music Bar because the Winx realized that she was downloading more than one pet (she downloaded several, all under different names). Once Stella was done demanding her to explain the amount of fairy pets downloaded, Roxy calms her dog Artu down (who was on high alert because of Stella's aggression) and once again releases her magical energy. The Winx realize who she really is, the Last Fairy on Earth. Bloom calmly explains that Roxy is a fairy with Flora vouching that her safety is at stake because the Wizards of the Black Circle are hunting her down. This makes her even more suspicious of the girls, thinking they are crazy, and decided that she and Artu need to lose them.
Later on, after escaping to Gardenia's factory area, she is attacked by the Wizards of the Black Circle, leading her to believe in magic and the Winx earn their Believix. Slowly and after learning that she is the Fairy of Animals, Roxy starts to use some limited power on Artu, such as making him talk along with the Fairy Pets. After a while she decides to show her powers to her Dad, but during her attempt, Roxy discovers that it was Duman in disguise. After being kidnapped, Roxy manages to escape and save her dad, but Gantlos tries to stop her.
After Gantlos harms Artu, Roxy becomes very enraged and transforms into a fairy, just like how Bloom first transformed herself in Season 1 when she was facing the Trix. After struggling to use her new magical strength to protect herself, the other Winx girls sensed her magic trail and arrive to save her. Once Roxy reunites with Artu and Klaus in the Gardenia train station, she complains to Bloom that she does not want to be a fairy, as it is too dangerous, but when Ogron attacks Bloom and Roxy's father, with help from the mysterious woman in her dreams, Roxy fights back.
As she gains more confidence with each passing day, she wants nothing more than to free the Earth fairies from imprisonment. She plays a vital part when the Winx need to free them.
Once Roxy helps free her fellow Earth Fairies, she feels sad due to the fact that they all want revenge. After Bloom defeats Nebula in a fight several days later, Roxy manages to convince Morgana to drop her quest for revenge. After the Black Circle betray their promise to surrender, Roxy, the Specialists, and the rest of the girls, especially Aisha, are deeply saddened by Nabu's sacrifice in order to stop the Black Circle's plot.
The following morning, Roxy has a vision of Morgana being trapped somewhere in the castle. After awhile of fighting Nebula and the Warrior Fairies (including Aisha), the Vengeance Fairies head to the Omega Dimension to hunt down the Wizards. Roxy frees Morgana from the magic mirror as she, being Morgana's daughter, is next in line to be queen. Once Morgana is free, Roxy is overjoyed at finally finding her mother, and Bloom again comments that she is so much like her.
Afterwards, they follow the Earth Fairies to the Omega Dimension, Roxy aids Morgana and the Winx in convincing them not to seek revenge and aids in the defeat of the Wizards once and for all.
After leaving the Omega Dimension, Roxy witnesses Morgana's abdication and the crowning of Nebula as the new queen (Roxy being too young to be queen herself), and Aisha rejoining the Winx, and returns to Gardenia with the Winx and Morgana. The following night, Roxy accepts Faragonda's offer to study at Alfea.
Season 5
Her role is significantly reduced in this season.
In the first episode of season 5, "The Spill", after one of the Winx's concerts, Roxy reveals that she will be working her last shift at the Frutti Music Bar. Roxy reveals to Bloom that she has been accepted into Alfea, and will be leaving soon. As Bloom shows excitement for the fairy, Roxy tells Bloom that she has been like a big sister to her, reminding Bloom of Daphne. When there is an explosion on an oil rig near Gardenia, she wants to help the Winx deal with it. Bloom tells her to take care of the people on the beach.
In the following episode, "The Rise of Tritannus", Roxy works her last shift while the Winx are performing their last concert. She also helps the girls and fellow concert goers clean up the beaches.
When she arrives at Alfea in the third episode, "Return to Alfea", Faragonda graciously welcomes and introduces her to all Alfea students, pointing out to everyone that she was the reason why magic has finally returned to Earth. When the Winx arrive, she is thrilled to be at Alfea and happy to see them.
Later that year, in ninth episode "The Gem of Empathy", she is a spectator for one of Stella's fashion shows. However, when the showcase goes awry, Roxy and a couple of other students leave along with some of the other girls.
In the eleventh episode of the fifth season, "Trix Tricks", Roxy watches the annual Red Fountain wind-rider competition and cheers for the guys.
At the beginning of episode twenty-two, "Listen to Your Heart", Roxy is seen from the sidelines, cheering for a volleyball game between the Winx (except Bloom) and Krystal's team.
She appears again, along with Artu, during Stella's fashion show in the twenty-third episode, "The Shark's Eye".
In the twenty-fifth episode, "Battle for the Infinite Ocean", Roxy eats breakfast at Alfea with her fellow fairies.
In the finale of season 5, "The End of Tritannus", Roxy is seen at the very end during the Winx's celebration concert. She is with many other attendees while cheering for the girls.
Season 6
In the beginning of "The Flying School", Roxy is seen inside Faragonda's office, being called to heal a crow which the Winx found. After sometime, Roxy came to Faragonda's office again with it, which has been given the temporary ability to speak. The crow then reveals that she is Griffin, and explains what happened to Cloud Tower.
In "The Lost Library", Roxy asks the Winx for help to return Griffin to her real form. Flora attempts to break the spell but fails.
In "The Secret Greenhouse" with the help of Palladium, she uses her magic to return Griffin, Carol, Evy and Lorie to their original forms.
In "Broken Dreams" she is seen in the Alfea Gym, practicing with the Winx, except for Bloom.
In "Mythix", Roxy joins with the Winx girls and meets up with her mother, Morgana, along with the other girls' moms for Mother's Day. The girls and their respective mothers have a pizza party and celebrate with dancing.
In "The Music Cafe", Roxy plays a bass guitar and tries to help defeat Rumpelstiltskin with the magic of the instruments. In "The Anthem", Roxy, Musa, and other students at the Music Cafe defeat the Witches of Cloud Tower using their music.
Season 7
In "The Alfea Natural Park", Roxy is in charge of transporting the Kangourmet safely back to the Alfea Natural Park. As the Fairy of Animals, she is crucial to the park, which is a refuge for Fairy Animals.