Disclaimer: I do not own Code Lyoko or anything in the DC Comics Universe.

Guest Starring: Lex Luthor

An Explosive End

Lex Luthor had arrived at a laboratory just a few miles away from Kadic Academy. He had been sent there by some unusual voice to go there and do something for it. Lex had gotten the crystal that unlocks the power of the Fortress of Lyoko. Bill was left for dead at the hands of Lex at the temple before he was saved by Green Arrow and his team. Lex Luthor walked into the Lab and went over to the control panel. He sat down in the chair and waited instructions.

"What do you want me to do?" asked Lex sitting at the computer.

"Go into the files and you will know what to do." the voice announced to Lex who began typing at the computer.

"Why do I always have to be involved in these things?" Lex asked himself. A few more commands were entered into the computer.

"Soon nothing will stand in our way." the voice growled at Lex as he entered in a few more codes. "Thank you, Mr. Luthor."

The computer began to boot up quickly like it was going to produce something. Lex noticed that there was a Scanner in the room that closed up and was on full power. He had not realized what he had just done. He had unleashed the most evil thing ever created besides Xana. The next most evil program that could possibly be released by anyone on the planet.

"Lex!" yelled a surprising voice. "What have you done?"

Lex turned around to face where the voice had come from and was surprised at what he saw. "Bill, but how are you still alive?"

"That doesn't matter. You just released your own worst nightmare." Bill replied. His scars were still on his face from being burned by Lex in the temple.

"He's right you know." an evil voice proclaimed as B-Nova stepped through the scanner back into the real world.

"Only you would find a way to return." Bill retorted crossing his arms at B-Nova.

"What are you?" Lex questioned B-Nova as her face distorted and then returned to normal.

"I'm Nova, only her complete evil opposite." she answered with a sadistic smirk on her face.

"What have I done?" Lex asked himself looking at his hands.

"You released the only thing that can save you." B-Nova said walking towards Bill.

"Lex just do one good thing in your life and let me take it from here." Bill announced as he got into a fighting postion.

"Sorry, not this time." B-Nova replied as she flew towards Bill tackling him threw the wall to the outside of the lab.

The two began fighting in the air before B-Nova punched Bill in the face and knocked him into the ground creating a huge dent in it. Bill shook it off and got back up but not before B-Nova landed in front of him totally unharmed. She had a huge smile on her face as she watched Bill stand up just as unharmed as her.

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Back on Lyoko, Rob had a giant smirk on his face after telling Aelita and Nova the truth about him and Bill. The two were clones, one and the same. Bill was the real one and Rob was the fake one. Nova couldn't believe it for one second that Rob and Bill were clones because of the way they acted so differently from one another. Aelita, on the other hand believed it but she didn't understand why she believed it.

"What's wrong mother? You don't look shocked." Rob declared staring into Aelita's eyes.

"I don't care if you are Bill's clone, you're still not my son." Aelita replied as an Energy Field formed in her hand.

"I wouldn't try that if I were you." Rob laughed. "If you kill me, you kill your son."

"Cat Claw!" Nova yelled as she tackled Rob with her claws swinging at his face. Rob defended by taking his spear and shoving it right through Nova's chest making her de-virtualize.

"Nova!" Aelita yelled as she watched her vanish. "Energy Field!" Aelita fired in Rob's direction causing him to fly off the side of the Sector.

"Aelita, I'm going to bring you back to Earth." announced Jeremy as he typed on the Supercomputer.

"Okay, Jeremy. I'll be waiting." Aelita stated waiting on Lyoko.

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Bill and B-Nova were trading blows with each other on Earth by Hayata Ishiyama's Laboratory. The two super forces kept knocking the other down to the ground. After a punch to the face, Bill went down and came back up with an uppercut to B-Nova's jaw knocking her up into the air and back down onto the ground. Bill stood there waiting anxiously as B-Nova got back to her feet.

"I thought you were tougher than this B-Nova." retorted Bill still in a fighting position in front of B-Nova.

"I am. I'm just letting you win." she laughed as her face distorted and returned to normal.

A bolt of thunder struck B-Nova in the side causing her to lose her balance and fall to the ground. Bill looked over and saw a girl with blue hair in a white and blue body suit standing just a few feet away. He was shocked to see this girl standing there and wondered why she would be there in the middle of a battle. Bill stared in her direction even as B-Nova got up again.

"What are you staring at?" the blue haired girl asked looking over to Bill. "Don't you have an evil computer program here you have to destroy?"

"Yeah, right." Bill nodded in agreement with the mysterious blue haired girl.

The blue haired girl started to form electricity in her hands as Bill's eyes turned back as electricity formed around him as well. B-Nova stared back and forth at both of them watching them emanate electricity from their bodies. She had no idea what Bill and this mysterious blue haired girl were doing.

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At the Factory Odd, Ulrich and Yumi had met up with Jeremy, Nova and Aelita in the Computer Lab. It was explained to the other three that Bill and Rob were one and the same, that they were clones. Odd, Ulrich and Yumi were shocked to hear this news of Rob's true identity. Jeremy turned back to the Supercomputer and noticed that Lyoko's energy was being drained, it was actually being drained from the Nightmare, Cloud and Island Sectors that had been created.

"What's this?" Jeremy asked curiously as the others crowded around him.

"Jeremy, someone is using Lyoko's power to power themselves up." replied Aelita right next to him in his chair.

"How do we stop it?" asked Ulrich crossing his arms. The rest of them wondered the same thing.

"No idea." answered Jeremy.

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B-Nova was ready to try to reflect Bill and the mysterious blue haired girl's attack on her at any moment. B-Nova had never faced a huge power like this. Not even Xana was this strong. Bill had a smirk on his face as he walked to stand next to the blue haired girl. B-Nova still couldn't figure out why he was smiling.

"Goodbye, B-Nova it was nice knowing you." Bill laughed at her. He looked toward the blue haired girl. "Ready?" She nodded.

The blue haired girl blasted her thunder-electricity at B-Nova, who caught it with her hands trying to block it. Bill added on to it with his own attack that made the attack even more powerful. B-Nova couldn't hold it back anymore and it pushed right through her causing her to disappear right in front of them. She no longer existed anywhere in the universe.

"Is it over now?" asked the blue haired girl standing there with Bill.

"Yes." Bill replied. "I do not sense her anymore."

"So we accomplished our goal." she stated. Bill nodded.

"But it's not over yet. One still remains and I have to deal with him." announced Bill as he frowned to his blue haired ally.

"I have faith in you that you can do it." the blue haired girl said handing Bill the crystal that could power the Fortress of Lyoko. Lex had dropped it before he left for Bill to take and stop Xana.

"Thank you." Bill said taking the crystal from his blue haired friend. "For everything."

"No, thank you." she smiled.

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A/N: Finally a new chapter. There's only three left of this story. One villain is down and just really one to go. Hope you like. Please Review.