Harley Quinn thrashed around in her sleep having the weirdest of dreams. When she woke up she found herself in some sort of forest.
Where the hell am I? Has puddin' been playing jokes on me? She thought.
She heard some growling and turned around and saw some wolves that were made of wood.
"Boy are you boys ugly." She said.
She then took out her giant hammer and said,
"But I better teach you dogs a lesson."
The wolves attacked but she wacked one of them causing it to break apart. She did the same thing to the others and even shot a revoler at the last one.
"Bad wolvsies. I wish Mr. J could have seen me in action. Better get a move on. Find out where I am."
She then took off running.
It took a couple hours and it was eventually night time but she eventually got out of the forest and found an entire city.
"A quiet town...... I don't like it. Time for Harley Quinn to get down to business." The crazed clown said.
She reached into her pocket and pulled an inflatable car. She took out the pin and put it on the ground and it blew into a giant car. She then hopped inside and drove off towards the town to cause destruction.
The Mane Six were having a sleepover at Twilight's place and had just fallen asleep. They were all dreaming in slumberland. When they were suddenly awakened by the sounds of explosions and ponies screaming.
"What the hay?!" Dash went.
Our heroes then quickly trotted outside and found most of Ponyville in shambles and dead bodies everywhere. Fluttershy and Rarity fainted at this. They heard something moving up ahead. It looked like some sort of vehicle and some sort of bipedal creature was driving it.
"Sorry for disturbing you but this town was a little boring so I decided to liven things up. By the way I'm Harley Quinn.. Remember that name because once I'm done with this town you'll never forget it. ha ha ha ha ha ha ha!!!!" Harley went and then drove off again crushing more buildings, firing missiles and running over ponies.
"Oh dear.... We gotta stop that..... Whatever it is from destroying Ponyville." Twilight said.
The Mane Six then trotted right after Harley.
Harley was on a roll. Already she had totalled almost the entire town of Ponyville.
Wish you could see me Mr. J. She thought to herself.
Suddenly her vehicle came to stop and was sprung out of it.
"Hey! What's the big idea?!" She shouted.
She then locked her eyes on the six ponies she met earlier.
"Oh it's you six. Big mistake stopping my car. I'm on a tight schedule." The harlequin said.
"We're not letting you destroy Ponyville!!" Rainbow Dash shouted.
"Just try and stop me girlfriend." Harley said.
Dash then charged forward but was met with a revolver bullet to the head.
"DASHIE!" Pinkie shouted.
The pink pony had a shot to the head as well along with Applejack, Fluttershy and Rarity.
"GIRLS!!!!" Twilight shouted.
She then met her demise with a giant mallet striking her on the head and crushing her skull.
"Heh.... That was easy." Harley said getting back into her car and driving off.
Harley's rampage went on and on until she crushed Ponyville and eventually Canterlot. Everypony was so scared of her that they begged for mercy..... and surprisingly even the Princesses who asked her to spare their town. She then made the princesses built her a portal back to Gotham City and when the portal was finished Harley shot the Princesses dead and then jumped into the portal.
Joker was walking around his hideout in a circle.
"Where the hell is Harley?"
Suddenly out of nowhere a portal appeared and Harley jumped out of it.
"Hey there puddin'." She said.
"Where have you been?" The evil clown asked.
"You'll never believe me. I was sent to a world completely inhabited by ponies and I killed each and every one of them..... Even their rulers and all in 7 hours. A new personal best." The harlequinn said.
Joker was amazed that his girlfriend could do that much destruction on her own.
"You don't know how proud of you I am of you." He said.
"Thanks Puddin'. Now let's go out and destroy Bats." Harley said.
"Well I ain't got nothing else to do.... Let's do it!!" Joker shouted.
The two then got into the Jokermobile and drove off into Gotham City laughing evilly.
The two went on a rampage in Gotham and when they had gotten away from Batman they got back to their hide out.
"So Harley. Can you tell me about your journey to this strange world?" Joker asked.
"Sure thing puddin'. I found myself in a forest and was confronted by wolves made out wood." Harley began.
"That is crazy." The evil clown said.
"Your telling me. I took care of them and ran out of the forest and saw a quiet town..... I hated quiet so I decided to go on a rampage." The harlequinn said.
"That's my girl." Joker said.
"I think I destroyed a lot of buildings and killed a lot of ponies. Six of them tried to stand up to me but they ended up dead. I thenk destroyed the upper town which was called 'Canterlot' and made the rulers bow down in fear of me. I made them build me a portal back to good ol' Gotham and shot the Princesses dead and then I came back here." Harley explained.
".... WOW!!!!! My little Harley is all grown up. I'm so proud of you. You brought an entire two cities into utter chaos. Looks like it's better to say this in words....." Joker started.
He then kneeled down on one leg and produced a ring.
"Harley..... Will you marry me?"
"YES! YES! YES!" Harley shouted taking the ring and putting it on her finger.
The two then leaped into each others arms and kissed each other.
"This is the greatest day of my life Mr. J." Harley said.
"And our future is bound for happiness. And pretty soon Gotham will crumble beneath us!!!" Joker went.
The two then laughed evilly into the night as the moon shined over Gotham as the future married couple laughed the night away and thinking about the future.
THE END.
Authors Note: The only reason I made this story was because of an order from my boss Clown Prince Of Crime to make a good crossover story with Harley Quinn. And this pretty much qualifies as great. Long live Harley Quinn, destroyer of Ponyville, Canterlot and conquerer of the Princesses.