All characters belong to Nintendo

X Men belong to Marvel

When they got to the castle, the door was locked.

"Luigi, do you have a key?" Mario asked.

"Yeah" Luigi said "I got it."

He smiled, extended his claws and cut a hole in the door and the four of them ran in. Dimentio teleported behind Luigi and closed a collar around his neck. Luigi spun around and swung his claws, but Dimentio was gone. He appeared behind Daisy and put a collar on her, he spun around and clamped one on Peach's neck. He disappeared again as a red laser shot where he was. He appeared beside Mario and clamped a collar on him. Mario took his sunglasses off, but nothing happened. Daisy took her glove off and grabbed Dimentio's arm. She didn't feel anything happening.

"Those collars are power suppressing" Dimentio said "your mutant powers will not work while you are wearing them. You are not the only ones with the ability to research."

Mario grabbed the collar and starting pulling on it.

"I wouldn't do that" Dimentio said "if you break the collar, four metal spikes will shoot into your neck."

Mario let go of the collar and glared at Dimentio. Dimentio disappeared and returned a few minutes later with Bowser and Kamek. Dimentio disappeared again and came back with Tatanga.

"What happened to your hands?!" Bowser asked looking at Tatanga.

"The green one cut them off" Tatanga said.

"Kamek" Bowser said.

Kamek pointed his wand at Tatanga. Robotic hands materialized on his wrists.

He opened and closed them and said "thank you."

Luigi noticed his claws were still extended, he stepped forward and said "It look like these claws aren't a mutant power anymore, they're a part of my skeleton now."

Tatanga pulled out a double edged, throwing knife and threw it at him. It hit him in the shoulder, blood began running down his arm.

"Your quick healing is a mutant power" Tatanga said.

He pulled out another blade and said "this one is for you, my flower princess. You ordered the green one to cut off my hand, now you will be punished for it."

He threw the blade at her. She stepped to the side as Tatanga threw another blade at her. Daisy gasped and braced herself. Suddenly, she was knocked to the floor. She looked up and saw Luigi standing there with the blade in his chest. He looked down at his chest and began to fall backwards. Mario ran forward and caught him and slowly lowered him to the ground. He gently lifted Luigi's head as Peach and Daisy dropped to their knees beside him.

"D…D…Daisy?" He said.

Daisy grabbed his hand and softly said "I'm here, Sweetie."

Luigi lightly squeezed her hand and said "ar…are you o…ok?"

"Yes" Daisy said as tears ran down her cheeks "thanks to you."

Luigi squeezed her hand again and said "please don't cry. Just get my collar off."

"Take his collar off!" Mario yelled at Dimentio.

"No" he said "I'll let you take it off. You can be responsible for the spikes killing him. He will get his mutant powers back for a few seconds before he dies, if it makes you feel any better."

"That's it!" Daisy yelled "Mario help me get his collar off!"

"What?" Mario asked.

"Trust me" Daisy said.

"But" Mario said "it wi-"

"T…trust her" Luigi said "help her get it off."

"Ok" Mario said.

Daisy grabbed one side of the collar and Mario grabbed the other. They pulled it apart as hard as they could until it finally broke. The villains smiled as the spikes shot into Luigi's neck. The light on the collar went off. Suddenly the spike wounds began healing. Luigi stood up and pulled the knife out of his chest and the wound instantly healed.

"How is that possible?" Bowser said "you should be dead!"

Daisy smiled and said "his healing factor only takes a few seconds."

Luigi extended his claws and began running towards Dimentio. Dimentio began backing up and looking around, but neither Bowser or Tatanga approached to help.

"The key to the collars!" Luigi yelled "give it to Daisy!"

Dimentio pulled out the key and threw it to Daisy. She unlocked her collar, then Mario's and Peach's. Daisy put her glove back on, grabbed the knife Luigi pulled out of his chest and began approaching Tatanga. Mario and Peach began walking towards Bowser. They heard something banging on a door in the corner. Mario lifted his sunglasses, looked at the door and fired a small laser at the door knob, blowing it off of the door. The door swung open and Yoshi and Rosalina walked out wearing the power suppressing collars.

"Rosalina" Daisy said "catch."

She threw the collar key at her. Rosalina caught it and unlocked her collar, then Yoshi's. Luigi ran towards Dimentio and jumped at him. He sunk his claws into Dimentio's shoulders. Dimentio teleported and disappeared, leaving Luigi suspended in midair. He fell to the ground, but landed on his feet. He looked around for Dimentio. Yoshi was running in and out of the fight, striking quick blows. Daisy was fighting Tatanga with the blade he had thrown at her. Mario and Peach were fighting Bowser, while Rosalina was using her powers to block the exits with ice and hail. Dimentio reappeared right behind Daisy.

Luigi began running towards her and said "Daisy! Behind you!"

She spun around and saw Dimentio approaching her.

"I'll take Tatanga" Luigi said "duck!"

Daisy dropped to one knee as Luigi dove over her and tackled Tatanga. Daisy took her right glove off and grabbed Dimentio's arm as he swung at her. They both froze as Daisy felt the power flow through her and Dimentio's energy was drained. Dimentio fainted as Daisy began to hover above the ground. Luigi cut off Tatanga's right robotic hand and stabbed him in the shoulder. Daisy fired several energy spheres at Tatanga's left hand, blasting it off. He looked back and forth between Luigi and Daisy and put his arms up.

"Yoshi" Luigi called.

Yoshi skidded to a stop and ran at Tatanga. He picked him up and carried him to a side room, threw him in and locked the door. Dimentio started to get up, Luigi saw him and ran over to him. He retracted the middle claw on his right hand.

He put the outter claws on each side of Dimentio neck and said "if you so much as twitch, I'll extend the middle claw into your throat. Got it?!"

"Yes" Dimentio said.

Daisy held her hand out and Dimentio was encased in a magic bubble.

"One more for the closet, Yoshi" Daisy said.

Yoshi ran over, grabbed Dimentio and carried him to the closet. He opened the door, threw him in and locked it. Bowser began swinging his claws around like crazy, keeping the others at bay. Kamek used his magic to create a shield to block Mario's lasers.

"Rosalina!" Luigi called "the middle three spikes on Bowser's shell are metal! Light him up!"

Rosalina's eyes rolled over white as a storm cloud appeared. Lightning struck the metal spike replacements. Bowser yelled and slumped to the ground. Kamek pointed his wand at Rosalina. Yoshi ran over and tackled Kamek. They locked them in the closet with Tatanga and Dimentio.

"Let's get outta here" Mario said.

All six of them walked out of Dimentio's castle, back towards the Mushroom Kingdom.