All right, let me make two things clear: 1- I am a die-hard Stitch fanatic. I don't tolerate Stitch bashing (especially the version of Leroy and Stitch). 2- This is my first fanfic. So just bare with me as much as you can. Also, if possible, send in reviews if you can. The more encouraging those are, the more encouraged I will be to write. Well, here goes nothing. Oh, and excuse any spelling errors.

This story takes place exactly three years after Leroy and Stitch, meaning that Lilo is about 11 or 12 (Since in Stitch: The Movie she was six, and Leroy and Stitch happened three years after that movie). I watched a lot of the episodes, and saw that 628 was never activated. Ever since then, I had been wondering what his power could possibly be. After reading Changes, by Tragic Warrior, I got the idea of what it could do. Piecing together bits from the episodes, the idea from the book, and my own imagination, I came up with this.

Experiment 628: Shifter

Chapter 1

"Jumba, I am not going to tell you again: I want you to help me clean this ship!" Pleakly yelled.

"Jumba too busy doing genius work. One-eyed noodle is cleaning person, not evil genius." Jumba said. In fact, he was trying to take a nap on the sofa.

"I didn't spend all my time at the GACC just to live here cleaning up after an evil scientist, who couldn't use a broom to save his life! You made the mess, you go clean it up, because I am TIRED OF IT!" Pleakly yelled at the top of his voice. Huffing and puffing, he grew more frustrated as Jumba yawned and turned away from him. "Fine! Fine! I'll clean it myself, and just throw everything I don't like away!" Seeing Jumba wasn't going to do anything, Pleakly stormed out to the ship, running into Nani on the way out.

"Hey Pleakly; have you seen Lilo? I can't find her again." Nani said.

Pleakly thought for a moment, and then answered. "Now that I think about it, she said that a new neighbor had moved in. She and Stitch went down to introduce themselves. She should be back in a few minutes or so. Now, if you don't mind, I have a ship to clean up by myself." After glaring back at Jumba, Pleakly stormed out. Just as he rounded the corner, Lilo came running through the doorway.

"Lilo; who's our new neighbor? Pleakly told me you went down to meet them." Nani said.

Lilo smiled. "I did. They have a son named Skipper. I like that name. It's unique. He's about sixteen, and his parents are constantly traveling, so they bought him a house here, where they visit when they can. He said that I'm the first person to visit him, and he really appreciates it."

Nani thought for a moment. "Well, with no parents, and since he's new here, maybe you'd like to invite him over for dinner. What do you say to that?" Lilo's smile broadened, and she ran out the door. Nani sighed, and walked into the kitchen. She started taking things out of the fridge, when Jumba came in.

"Who is being new around here?" He asked.

"Some kid named Skipper. Kind of a funny name if you ask me. His family isn't around much, and I invited him over for dinner." Jumba looked away thoughtfully.

"I is recognizing that name from somewhere, but can't put finger on it. I is going to check computer in space ship. Be back soon." Saying this, he walked off towards the ship. Nani sighed again, and was stuck on what to do. She was an ok cook, but didn't want to accidentally ruin something for their guest. After a minute of thinking, she picked up the phone.

"Hey David! I could use a favor." Nani said into the phone

"You know I would do anything for you." He replied.

Nani smiled. "I know. Look, Lilo is inviting our new neighbor over, and I want dinner to be great. But, you know that I'm only a so-so cook. So I was wondering if you could come over and help me out by cooking something nice."

David's answer was swift. "I would love to cook for you guys. I'll be right over." The phone clicked, and Nani hung up the phone. Smiling to herself, she double-checked that she had the item in her pocket, shivered, and hid it in a drawer. "Maybe in a few days" she thought. After taking out a few more things from the fridge and cabinets, she sat on the couch to wait for David to show up. Just as she sat down, Lilo came running through the door.

"Lilo, slow down a little. You can't keep running around like a loco head. What did he say about dinner?"

Lilo looked happier than before. "He said that he would love to come. He's going to be here whenever we tell him to be."

Nani looked over her shoulder. "Where's Stitch? I thought you two went over together to say hello."

Lilo's face turned sad. "He did, but we ran into Angel on the way back, and he went off with her. Probably too busy kissing each other to care, anyway." She glared over her shoulder, as if Stitch were there, and stormed off. Nani heard the hiss of the elevator, and knew that she had gone to her room. "Poor Lilo." She thought. "Why can't you just tell him how you feel?" She mentally kicked herself. "Well, why can't you tell David how you feel, Nani?" Groaning, she rolled over, and was about to go to sleep, when Jumba came in, looking troubled. "Did you figure out the name?" She mumbled.

"Yes, I did." Jumba said. "But is private and personal mater, and I is not wanting to talk about it right now. Oh, and surfer-boy is coming up now." Just as he finished, David walked through the door.

"Knock knock!" He said. He and Nani smiled and hugged each other. "So, what do you want me to cook?"

"Wait in the kitchen for a moment." Nani said. Turning around, she called "Lilo! I need you to go tell your friend to be here in an hour! Jumba! I need you to track down Stitch and get him here!" A minute later, Lilo and Jumba walked out the door. "Now, David, let's get going.

"Thank you for the meal, Ms. Pelekai." Skipper said. "It was really delicious."

"Thank you for saying so, Skipper. But, it was David who did most of the work." She said as she started picking up the dishes.

Skipper glanced around the table. "Hey Mr. Jumba, could I have a word with you and Lilo's dog, Stitch?"

Nani glanced between the three of them, and noticed Jumba looked nervous. "Of course. Come along. Should be back in minutes, big girl." As they walked off, Lilo made sure no one was looking, and followed them. They went into Jumba's room, and closed the door. By standing right next to it, and putting her ear to the door, she could make out what was being said.

"So Jumba, I haven't seen you for a long time. It's been – what, four or five years? So tell me: how long did it take you to realize the error you made with 627? I looked at your programming and realized it within minutes."

Jumba sighed. "I is not caring. Why is you here now? And why is this concerning 626?"

Skipper sighed. "Well, it's important. However, before I continue, would you please invite Lilo in here? She's just outside the door, eavesdropping." Lilo gasped as the door swung open. Stitch ushered her in, and closed the door behind her. "All right. For the sake of Lilo and Stitch, I am going to go over all the details, starting when Jumba and I met. When you were out catching experiments, I was following you around. I was on a vacation here, and thought you were all interesting. Well, I ran into Jumba, and we got into a conversation about Stitch, and we came up with the idea of making something that could beat Stitch: 627. When his programming was complete, I looked it over, and saw his weakness, but said nothing so that he could be defeated. However, Jumba came to me shortly after, and we made 628. Putting blood from various experiments, including Stitch, in, we made a great experiment. However, looking over the programming, I realized that he was practically invincible. Because of this, and the failure with 627, he was never activated. One week ago, the pod for experiment 628 was taken. However, what I feared came from Cobra Bubbles a few days before that. He said that Hamsterviel had escaped from Asteroid K37, and was headed towards this sector. Thankfully, he didn't bother freeing all the Leroys. Putting this together, along with a small amount of guesswork, I decided that I should come down here and keep an eye out. I fear that, although he has no clue what it does, he will activate it, and set out to destroy us."

Lilo thought for a moment. "You programmed him, right?" Skipper nodded. "So, what exactly does he do?"

Skipper sighed. "I may be a genius, but I don't have a perfect memory. The last time I looked at that programming was five years ago. That's why I wanted to talk to Jumba and Stitch. I want to look at the programming, all three of us, and figure out what he does. It may take a few hours, but probably at least a day or two to figure out. No offence, but I don't think you're going to understand enough to figure out the programming, Lilo, and I wouldn't stay around here, because your going to get bored."

Lilo nodded. "You're right. I'm just going to go hang out in my room. Tell me when you find something. Oh, and if you want Stitch to focus, lock the door and window so that Stitch doesn't leave to make out with Angel." Walking out the door and closing it behind her, she went up to her room, and awaited their find.

Well, there it is. The first chapter of my first fanfic. Please review and tell me what you think of it. When I have some time after this weekend, I will add another chapter or two, and see what the general concensus is, and see if I should continue.