She is the main villain of Winx Club Season 6.
Disney vs Cartoon Villains War[]
Joining Alastor[]
Miss Griffin was enjoying Selina spells as she was about to give Selina a good grade.However,they are interrupted by Alastor who decided to recruit the young witches.As Miss Griffin was trying to stop him,Alastor used his staff to transform Griffin into a crow,taking control of Clow Tower.Impressed Selina and the others join Alastor,while Alastor,declares to Selina that she is gonna be his apprentice.
Testing the Legendarium[]
Alastor and King Dice decided to test the Legendarium by putting Selina to be a creature for them and cause chaos around Paris.Selina agrees as she frees the famous trickster Rumpelstilskin,that managed to create chaos across Paris alongside The Pink Elephants.
Meeting The Devil and getting a promotion[]
As a request from King Dice,The Devil finally meets Alastor and Selina and managed to have a chat with them.After the conversation,Devil gladly accepts them into his inner group.After losing for the first time, King Dice tried to explain to The Devil and his allies why he failed to conquer Wonderland.However,Devil could not care less as he informed King Dice that Selina is going to take his place in his upcoming plans,which left King Dice shocked.However,Alastor suggested The Devil to get more allies for his quest,leaving King Dice to become the newest lackey of Selina.
Trying to conquer Crystal Cove[]
Selina has decided to conquer The Crystal Cave (who was owned by Chernabog) ,so she hired an alicorn that wants to help the young witch as a way get more popularity and potentially even being hired by The Devil.However,Selina also freed some spirits to help Cozy Glow with her quest.Selina's plan failed after Cozy Glow was defeated by Gideon and trapped into Tartarus by Bill Cipher.
Planning to free Acheron[]
While King Dice was begging for his job after he was fired by The Devil, Selina revealed to Acheron that she has a plan to free him.Then she reveals to Alastor about this which intrigued the radio demon into agreeing to help Selina with her goal.
Selina promised Acheron that she will free him pretty soon by planning to steal something from Forbidden Mountain.