|Status||Working with Nightmare|
|Location||Snowzerland Castle with Bellina|
Xellina (Pronounced Zellina) is the X antibody of Bellina. She and Bellina are good friends, but view each other as rivals for conquering the world.
Bellina caught the X-Virus. She then coughed out Xellina. They often worked together. They always played together when Swiss and Maddie watched them. When Maddie and Swiss were gone they would make plans on how to destroy the castle. They were best friends and they would usually work together in battles. (A lot like how WishFlyx and Agent X work together)
Later Xellina joined Darktan's Army. She was a very good minion, and still worked with Bellina as partners. Bellina would get more credit and apreciation than Xellina. However, Xellina viewed Bell as weak and incompetent. She started to dislike Bellina and they became more competitive towards each other. Xellina revealed to MAddieworld and Swiss that she was evil, and ran away to join Nightmare's army. Nightmare accepted her and she was treated better. She is good friends with Fisxh and Nightmare.
She can fly and sometimes gives Bellina rides to places. She also acted cute around Maddie and Swiss until she made her evilness public.
- She loves calling Bellina "Bell" as a nickname though Bellina doesn't mind.
- Xorai hates her too.
- Flywish thinks they're so adorable together.
- Unlike Bellina, Xelina has made her evilness public.
- She once tried to make Bellina's evilness public but this was epic fail because no one believed her.
- She is a parody of Bertram from Family Guy. This is possibly because she is against Bellina.
- She got mad at Darktan's army and joined Nightmare.
- Ben Hun plans to make her suffer for causing him to lose the battle with flywish.
- However, Xellina is pretty much as strong as Radal so It is impossible.
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