A/N:This is my first (1st) Halloween Speical fanfiction, and may I say it's about all cartoons that came from their worlds to be celebrating Halloween party and it seems that we could be enjoying this fanfic as we get to go for the following:

This story has contains a cameo of Joey from "Friends"

Every time that Numbuh 2 (Codename:Kids-Next-Door) makes a pun, he gets pie in the face

It contains a little love

One of the cartoon parents could remember his or her Halloween

Every time that Lisa Simpson says "Potpourri", she gets 1% luckier

Bart and Lisa Simpson are 15 and 13 years old in this story

Oh, and did we mention that somebody gets twice luckier for the whole story?

Chapter 1:A Halloween Party we will go

It all started when Bart and Lisa had to the Halloween costume shop as they get to find the perfect costumes for Halloween.

They had to search for the perfect costumes as they had to be searching as the could be here.

"Bart, I'm a little concerned, don't you think that we could be that we should be celebrating Halloween that at home so we don't have to get T. ?" asked Lisa.

"What are you worried about?" Asked Bart. "I think that we need to give out the perfect costumes so we had to go out for Trick or treating."

"Yeah, I hope that you're right." just then, it had happen to be that intense that they had to make sure that they're going to be that that they had to search for the right styles about it.

Just as they picked the perfect costumes, their mom Marge had to walk up and give this to them. "Kids, you're bout going to be going as!" as she gets to walk out, she happen to be exactly like a Circus performer. "Mom, is that what I think that you're going to be?" Bart asked. "I Happen to be a circus performer for Halloween, what do you think?" As her husband Homer had to come up and get to be that as he knew of what might get to show about it. "Uh, Kids, I Think that-" as he switches to Marge. "Nice costume Marge, maybe that I get to be tamed by you." As he cat rowels as he switches back to the kids. "There are going to be some monsters out there and I was wondering if you could be that we better get out of here before they come to us!"

"Don't worry Homer, I guess that it should be that it's going to be that surely to be scaring them away." As he gets to see those monster, they were both freaky mutants with Horns on their heads.

As both Homer and Marge screamed, they ran over to the cashier as they get to be that they turned out to be Bart's Miracle City friends Manny and Frieda.

"Ha, ha, ha, surprised, did we?" said Frieda. "Oh great, you dressed as mutants so you can be invited to that Halloween Party by that Mansion."

"Oh yeah, the Whammy mansion, I heard that say that the whammies had to be that hoping that it could be that simply had to notice that we're going to be that surprising that we should be more reliable."

"Well, I think that we should be going to that Halloween party, what do you say?" asked Marge. "Whoo-Hoo! Let's hope that it could be a fun Halloween party!" cried Homer.

"Well, we've already got some costumes so we need to make it as they had to be seems that it could be exciting."

Just as they had to be on a certain on Three nights before Halloween, Vlad Plasmas has a plan to make a trick as he gets to go though those mutant zombies as they get to be following that he has a plan.

"There, I just happen to make those zombie mutants have come to life here."

"Excellent," said the mysterious voice. "Now that Halloween that could be more interesting just as they had to see there."

"But they won't have to be ready until Halloween though."

"We can wait, just as until that night comes." as that voice happen to be reviled to be The Titanium Titan, White Pandera's ex-superhero sidekick and an enemy of Manny Rivera.

At the farm, Farmer Jeb was sleeping until he was awoken to see what was going on outside as he got his gun and said, "You young whippersnappers, you better get off my farm!" But it wasn't "whippersnappers" he thought he was happen to be, it was much worse, much worse indeed.

"Huh, I could've sworn that it was those teenagers making out love." as he gets to walk back to his house, he heard about one thing as he heard that he was going to heard that he hops out and he noticed that he was going to know o what was going on out there.

"Hello?" he asked. "Is anyone out there?" as he ran to his prized-pumpkin, he was holding out that he was seriously to be that worried that something is out there, and it could be that he was getting scared as he notice that he was worrying that it keep getting closer and closer and closer, that was until that he saw that mutant zombies as they get to be held hostage, but that was just only the beginning for those Mutant Zombies.

Meanwhile, at the mansion, Thomas Pickles was at the mansion as he gets to see that he gets to know about the Halloween party's going to be perfect.

"What a great Halloween Party," said Tom. "I'm glad that I could come up with it."

"I thought I come up with it." said Chuckie as they get to fall down the vampire's coffin.

As Kimi Finster, Chuckie's Sister, gets to walk up, they knew that they had to make sure that they're going to make it more reliable. "No offense guys, but you do stop and think that we need to be that it could be that we should be making it more party-ish?" "If you asked me, I think those aliens are about to invade earth and party!"

And just as they had to see that, Suzie had to invite those kids over to a Halloween spooky inspection here. "Ok, I think that we need to be that we're going to be using the prizes for the Costume Party, especially the big prize that's happen to be that a pound of candy."

"Well Suzie, I think that we need that we're going to make sure that this is going to be the best Halloween Party ever and may I say, it could be qualifying activities such like 'Pumpkin carving', 'The Halloween Wheel', and even the games like 'Bobbing For Apples'." Chuckie Inspects.

Just then, their WHOOP Friends had to walk over here and scare the living the daylights out of them.

Just then, they had to make sure, they get perfect for the Halloween Party, the Tweenage Rugrats had to put the finishing touches as they get to be putting around in there, as the mutant zombies are planning to be going to that party to crash.

Back in the Simpsons Residence, the family are having dinner as they get to be talking about the Halloween Party. "I'm sure that we're going to have a rousing good time for the party as we get to be that seriously to be really out of touch around."

"I assumed that I dreamt that I was a zombie slayer and I slayed all those zombies." replied Marge.

"You? A Zombie slayer?" said Homer as he and Bart laughed. "That'll will never happen."

"I Happen to be taking Maggie* to trick or treating out so I had to take care of her on Halloween." said Lisa.

"It's only part of the kindergarten system, I'll let you know that it could be that seriously to be that intense that strangely to be that they just don't know about anything is about to happen."

"Ooh, I can't wait for some fun Halloween party games and they had to make sure as they had to go over there." Said Homer.

"Manny has once even met the original El Tigre himself, and I can't believe I heard that story 20 times!" replied Bart. "Back when Mr. R. and I were neighbors."

"I even get to hear that there's going to be a candy costume contest so I hope that we get to enjoy that we could be that intense."

"Don't worry Homer, just as far as the eye could see, this is going to be the best Halloween ever." as one of the mutant Zombies hear with a stethoscope.**

"Did you hear that," Asked one of the zombies. "The Simpsons are going to that mansion for that Halloween Party."

"Ooh, that's perfect," said another one. "That's where we're going there." as they get to report to Vlad and the Titan.

"The Simpsons are going to that Halloween Party up at that old Mansion here so we heard that we're going to be there." said the Doctor Zombie.

"Good, Good," said the Titan. "As far as we get to be that we're going to be showing that, they could be more people going there."

In the "Adventure Time" World, Finn and Jake got invited there. "Wow, a Halloween Party! Shazmow!"

"And it's that spooky ol' Mansion." said Jake, his best friend.

And the invation goes to the same to Johnny Bravo. "A Halloween Party?" As he show off his moves. "I can't wait to meet those babes up there!"

And at Foster's Home For Imaginary Friends, Frankie got a letter. "A Halloween Party? All right!"

And at Amityville, Sam Manson got invited too. "Hey, A Halloween Party! I Can take Danny there!"

And so on and So forth for others, but question is, what they're going to wear?

As they can prepare for Halloween night, so are our villains and the Mutant Zombies.

Closing Note:This is my first (1st) Halloween themed Cartoon X-Crossover story, please make comments and tell me what you think so far.

*=In this story, Maggie is 6-7 years old in this story.

**=One of the Mutant Zombies is a Doctor as he got his Stethoscope.