Thanks for all of the reviews guys and gals out there! I really wouldn't be able to write my stories without any of your constructive criticism. Now we move on to the world of The Nightmare Before Christmas, and all sorts of holiday mayhem! And of course, Ben will gain a new alien form during this particular adventure. I hope you all like this story!

Mass Crossover! Includes: Leroy and Stitch, The Nightmare Before Christmas, My Little Pony: Equestria Girls, Teen Titans, Xiaolin Showdown, Zoids, Sonic The Hedgehog, Bionicle Web of Shadows, The Halo Series, and The Lion King 1 1/2!

Current Harem: Older Lilo, Wuya, Blackfire, Twilight Sparkle(Equestria Girls), Sunset Shimmer(Equestria Girls), The Dazzlings(maybe)

Disclaimer: I don't own anything that is used in this story, except for the different matrix's used in this story! Minus the Omnitrix, and the Nemetrix.

"Normal Speech"

"Mental Link/A.I. Talking"

'Thinking'

Songs

"Yelling"

Alien Index

"Shen Gong Wu Description"

This Is Halloween!

Lilo had aged physically by about six years. She was a bit shorter than Ben by about two inches, her skin retained its tan color, and her hair grew to her mid waist while it retained its usual style. However, her body had definitely developed well. She now had curves in all the right places, and E-cup breasts. Her clothing had also changed. She was now wearing a beautiful kimono with a sakura tree and a storm over it. Overall, Lilo had grown into a beautiful young woman.

"Whoa. This feels kinda weird..." Lilo said to herself as she looked herself over.

Nani however was pinching the bridge of her nose. She was hoping that she wouldn't have to do this for quite some time, but it looks like she'll need to do this before her sister leaves.

Lilo felt something pulling at the bottom of her kimono. She looked down to see Stitch looking as sad as he did the day he left to become captain of the Big Red Battleship. Lilo knelt down, and hugged her longtime friend.

"I'll miss you too!" Lilo said through a few tears that started to fall. "But I need to do this. I can get stronger to help you protect our ohana. This isn't goodbye forever, it's just goodbye until next time."

"Stitch miss Lilo." Stitch said sadly, as he ended the hug.

Lilo stood back up and turned to leave, but before she could take a step towards the portal that Kami had opened, she felt a hand on her shoulder. She turned to see Nani looking very serious about something.

"Lilo, come with me." Nani said, walking her not-so-little sister into the house. "It looks like its time you and I had...the talk."

"Well, while those two talk there is something that I must give to you, Ben." Kami said.

She pulled a small wristwatch out of her sleeve, and put it on Ben's wrist. The design of the faceplate looked similar to the container that used to hold the other six hundred and twenty five experiments.

"This is a portable container. Use it to contain any experiments that you create after dehydrating them for transport." Kami explained.

"Thank you, Kami! This will definitely come in handy later on." Ben said while bowing in gratitude.

When the two sisters came back out of the house, Lilo looked so grossed out you'd think she'd be ready to barf at any moment. And she started to blush like mad when she looked at Ben.

"Lilo, are you okay? You look kinda sick." Pleakley asked.

"I don't wanna talk about it." Lilo said quickly.

Wordlessly, Lilo walked into the portal that lead to Halloween Town. While confused about the whole manner, Ben followed her to the next world, and the next adventure. But as Lilo went through the portal, she uttered a single word.

"Aloha…" Lilo said sadly.

"Aloha…" Stitch responded just as sad.

The two avatars went through the portal, and it closed behind them.

***Halloween Town***

Ben and Lilo appeared in a very creepy looking town that definitely held that Haloweeny vibe. Looking around, Ben could say only one thing.

"I got a feeling we're not in Kansas anymore, uncle Toto!" Ben said.

"Hey, when did we get into these weird costumes?" Lilo asked.

Ben looked down at himself, and then at Lilo to see that they had indeed gone through a costume change.

Ben was now dressed as a Vampire from ancient lore. He wore a pair of black slacks, a white dress shirt with golden couplings and a black vest over it. He also had on a red scarf with golden buttons attached to golden chains holding the vest together, black dress shoes, and a cloak with a big, pointy collar.

Lilo was now wearing a black silk spaghetti strap dress that went down past her knees, purple and green striped leggings, black shoes, and a witches hat on her head. For some reason, Lilo also had a sword strapped to her back.

"I think that this is so we can blend in with the citizens here in halloween town." Ben guessed.

Both teens checked to make sure they still had their respective devices. Thankfully, they were still there. Ben and Lilo walked along the path until they came across a well that was filled with green water. this was very strange to them, but they were cut off from their thoughts when they began to hear… Music?

"Lilo, do you hear that?" Ben asked.

"If you mean that scary, yet oddly catchy music coming from nowhere, then yes." Lilo answered.

They had no time to ponder this, because the inhabitants of this world were beginning to sing a song that ALL Disney fans know and love.

Shadows: Boys and girls of every age, wouldn't you like to see something strange?

Siamese Shadow: Come with us and you will see, this our town of Halloween!

Pumpkin Patch Chorus: This is Halloween! This is Halloween! Pumpkins scream in the dead of night! This is Halloween, everybody make a scene! Trick or Treat 'til the neighbors gonna die of fright!

Ghosts: It's our town! Everybody scream! In this town of Halloween!~

Creature Under The Bed: I am the one hiding under your bed! Teeth ground sharp, and eyes glowing RED!

Creature Under The Stairs: I am the one hiding under your stairs! Fingers like snakes, and spiders in my hair!

Chorus: This is Halloween, this is Halloween. Halloween! Halloween! Halloween! Halloween!

Vampire Quartet: In this town we call home, everyone hail to the pumpkin song!

As Lilo and Ben listened to the song, they couldn't help but get caught up in all of the excitement. Lilo was a big fan of scary stuff, and was in horror movie paradise. Ben was just in it for the heck of it.

Mayor: In this town! Don't we love it now! Everybody's waiting for the next surprise!

Chorus: 'Round that corner man, hiding in the trash can! Something's waiting now to pounce and howl, you'll…

Harlequin: SCREAM!

Werewolf: This is Halloween!

Harlequin: Red n' Black!

Melting Man: And slimy green!

Werewolf: Aren't you scared?

Witches: Well that's just fine! Say it once, say it twice! Take a chance and roll the dice! Ride with the moon in the dead of night!

Hanging Tree: Everybody scream! EVERYBODY SCREAM!

Hanging Men: In our town called Halloween!~

"Ben, I am LOVING this song!" Lilo said as she started to dance to the tune of the song.

Ben took her hands in his, and started to dance with her. The two of them were having so much fun, they felt like they were gonna explode.

Clown: I am the clown with the tear away face! (Rips his face off) HERE IN A FLASH AND GONE WITHOUT A TRACE!

Voices: I am the 'who' when you call 'who's there'?

Wind: I am the wind blowing through your hair!

Oogie Boogie Shadow: I am the shadow on the moon at night, filling your dreams to the brim with fright!

Chorus: This is Halloween! This is Halloween! Halloween! Halloween! Halloween! Halloween! Halloween! Halloween!

Corpse Kid and Bat Demon: Tender lumplings everywhere! Life's no fun without a good scare!

Zombie Dad: That's our job…

Corpse Mom: But we're not mean!

All Four: In our town of Halloween!

Chorus: In this town…

Mayor: Don't we love it now! Everyone's waiting for the next surprise!

Lilo and Ben soon heard some lyrics that made them stop dancing, and look over to the gate. A man with an axe in the back of his head was pulling a straw horse with a crucified scarecrow riding it. The scarecrow sprang to life, and grabbed a torch from the audience. Ben hypothesized that the straw from the scarecrow was very dry, but when the scarecrow swallowed the torch, it burst into flames, did a flexible dance, then swan dived into the fountain.

Chorus: Skeleton Jack might catch you in the back, and scream like a banshee! Make you jump. Out! Of! Your! SKIN! This is Halloween, everybody scream!

Hanging Tree and Hanging Men: Won't you please make way for a very special guy?

Chorus: Our man Jack is king of the pumpkin patch! everyone hail to the Pumpkin King now! This is Halloween! This is Halloween! Halloween! Halloween! Halloween! Halloween!

Corpse Kid and Mummy Kid: In this town we call home, everyone hail to the pumpkin song.

Chorus: La-La-La! Lalala-La-La! Lalala-La-La! La la la! La la la! WHEEEE!

As the song ended, a figure began to rise from the waters of the fountain. It was an eight foot tall skeleton wearing a black and white pinstripe suit, a pair of dress shoes, and a bat for a bow tie. This is Jack Skellington, the Pumpkin King of Halloween!

"Lilo, I think our next adventure has just begun!" Ben said to Lilo.

Lilo however was blushing pretty badly. Why? Because Ben was still holding her in a warm embrace from when they were dancing earlier.

And this chapter has just been complete! the adventure continues in the next chapter! Now I need your help with something. I need some name ideas for Lilo's alien forms, and ideas for what the ultimate forms of some of Ben's aliens should be! Be specific about their looks and abilities when you send them in, please. Good luck to all of you, and enjoy the new chapter!