Nebula/Series

Season 4
Nebula strongly wishes to get her revenge on the Wizards of the Black Circle. In episode 9 of season 4, Nebula possesses Roxy through the White Circle and goes out to take down the fairy hunters herself with Roxy as her vessel.

The Winx Club trail the possessed Roxy to the warehouses on the docks where a battle royal between the Wizards and Roxy ensues. The Winx interrupts, much to Nebula's dismay. The Wizards escape as the Winx are occupying Roxy wondering about her sudden personality change. Nebula threatens to make them pay as they gave the wizards an opportunity to escape by making a large sphere of energy surround her to presumably harm the Winx. The Winx Club surround her and make shields that reflect the energy of the sphere to Roxy and forces Nebula to leave Roxy, who faints out of having exhausted her powers in fighting the Wizards.

When the Major Fairy of the North, Aurora, took part in the Fairies' Revenge and started freezing the human world, Bloom challenged Nebula to a fight, the conditions being that if Bloom wins, the Wizards will have to be given a fair trial, but if Nebula won the Winx will surrender the Wizards to the Earth Fairies for punishment and leave Earth. After a heated battle, Bloom won.

Nebula leads the Royal Guard Fairies of Tir Na Nog and becomes the leader of the Warrior fairies of Tir Na Nog. Morgana claims that Nebula used to be the Fairy of Peace.

Her vengance against the Wizards of the Black Circle leads her to overthrow Morgana as the Queen of the Fairies with Aisha as her second in command and to cross pass through Magix into the Omega Dimension to destroy the Wizards, after announcing to the Winx that she planned to lead the Fairies into taking the control of the world from the humans.

After the heated final battle and the Wizards defeated and frozen solid, she saw the error in her vengeance and wanted to stay in the Omega Dimension as a way to punish herself, telling Bloom that she had become alike to the Wizards. When Bloom told her that she was still has Goodness, and that there was still light in her, she returned with the Winx out of the Omega Dimension and was forgiven by Morgana, the Winx Club, and the Fairies of Earth. Nebula then lead the Tir Na Nog Fairies in restoring magic on Earth so as to restore the balance of the forces of nature and allow new fairies to be born on Earth. Morgana decided to stay with her family and gave the Crown of the Earth Fairies to Nebula who she believed would do an excellent job protecting the Earth Fairies, making her the Queen of Tir Na Nog.

Season 6
In "Mythix", Nebula had converted Morgana's castle into a school of Fairies. Back at Morgana's castle, Nebula shows the Winx the Mythix Wands on display in a vault. According to her, seven fairies from the Legendarium crossed over to the real world and traveled the many worlds of the universe, including Earth. She also mentions that the wands are impossible to hold until a fairy has proven herself before them. Aisha believes they have proven themselves many times from all their battles against the Legendarium monsters. Suddenly, the castle is under attack by the Trix and some witch recruits. The Winx come out and transform. Eldora also transforms to join the fight. During the fight, two witch recruits sneak past and enter the castle. Bloom quickly follows them to stop them from getting to the wands and easily dispatches them.

Selina watches from the viewing orb as Acheron is annoyed that the Trix will not share their power with Selina in order to free him. Selina has another alternative in mind that is Bloom's Dragon's Flame.

Due to the Trix's new amulets, they were holding their own aganst the Winx, Eldora, and Nebula. Inside the castle, Bloom gets ambushed by Selina, who entangles her with an ethereal snake. The other fairy students try to fight her off, but get chased off. She then mocks Bloom at their meeting again and asks if she is happy to see her. Bloom tries to talk sense into Selina that Acheron is too dangerous to free and to trust in Eldora. Selina retorts that Eldora is dead to her and that Acheron is the only real friend she has before trying to extract the Dragon's Flame. Bloom, gets angry and defiantly blasts Selina back to stop her.

Outside, The powered Trix were overwhelming the others until Bloom comes out. Icy then pursues her into the castle, cornering her into the vault where the wands were at. As Icy was about to launch a powerful spell, Bloom realizes that the amulet was giving the witch her power boost. Taking a gamble, Bloom shoots the pendant, destroying it. This also causes Darcy and Stormy's pendants to shatter as well. Realizing their power boost was gone, the Trix and their minions retreat like cowards.

In the vault, Nebula thanks the Winx and Eldora for saving Tir Na Nog, Then to their shock, The Wands phase through the glass display to the Winx and Eldora. Tecna states that this definitely meant they have proven themselves as fairies before the wands. The time has come to enter the Legendarium World.