One day, Wolverine was sitting under a tree with kabobs on his claws. Suddenly a portal appeared in the sky and colored ponies fell out! They were the My Little Ponies. Wolverine finished his kabobs before skipping over to check out the ponies.
Suddenly Twilight Sparkle ran forward. Wolverine shot his claws out and poked her in the eye but Twilight stabbed him in the stomach with her horn. But Wolverine could heal! He pinned her horn between his claws. She kicked him with her hind hooves.
Then Cyclops came out. He lasered Twilight in half. Suddenly he was blasted by Princess Celestia! Suddenly Celestia was electrocuted by Storm. But Luna avenged her sister and electrocuted Storm back. Meanwhile Wolverine was ok!
Then Kitty Pryde leapt up, used her transparent powers, reached in, and pulled out Luna's heart. But Princess Cadence, the pony of hearts, gave Luna a new one, froze the mutant healing powers, and knocked Kitty out. But then Rogue stole Celestia's powers and blasted Luna and Cadance through a tree. But Derpy dropped stone muffins on Rogue's head.
Suddenly Rainbow Dash did her Sonic Rainboom and blew up the X-Men Institute! So Iceman froze her and Derpy. Then he was trapped in a gem Rarity made. But Emma Frost used her telepathic powers and made Rarity do the chicken dance. Then Emma was tied up by AppleJack's lasso.
Suddenly Angel grabbed AppleJack and Rarity and threw them in the sea. So Spike blew fire and burned Angel's wings right off. Then Beast squashed Spike. Then Fluttershy ran Beast over with her animals. So Nightcrawler teleported all the animals and Fluttershy to the ocean and dropped them in. But then Nightcrawler was put in Pinkie Pie's party cannon and blasted to Genosha!
Then Pinkie Pie's mind was invaded by Charles Xavier's telepathic powers. Then the Hulkbuster dropped on top of everyone that was still on the ground. Then the Brotherhood fell on top of the Hulkbuster and squashed it. Then Magnito and Scarlett Witch crushed the Brotherhood. Then Deadpool flattened Magnito and Scarlett Witch. Then Wolverine ate Deadpool!
Suddenly Thanos in his chair fell out of the sky and squashed the continent. He laughed evilly. Meanwhile Galactus was floating around in space and gobbled up the planet. "Yum!" He said. And that was the end of the Earth.
A short story me and my sibling came up with one night. I told the role of the My Little Ponies and she got the role the X-Men (until the end when I ran out of ponies).
Also, this should totally happen in the MCU.