Skyworld
Kid Icarus dimension
"I am born of an imperfect universe." It said, speaking in a mysterious, forgotten tone. "Afflicted with the cancer of life. From its ruins, a new universe shall be created in my own image, from the fires of reality, time and space. All life will become death in my universe, free from unimaginable sins. I am Master Core. I am your god."
Mega Man picked up Link's Hylian Shield and hurled it at Primids, knocking them down. He then blasted away at Jet Primids while Link joined the fray. He braced himself as Primids charged towards them, only to be sliced by a water blade. The Water Pokémon Greninja slashed through anything that dared threaten it. "Are the teams in position?" a small voice asked. It was Proxi, Link's fairy companion. In Mega Man's opinion, he looked like a white ball with wings. And since Link was mute, Proxi did most of the talking for him. "Yeah. Good to go. But the enemy is massing near the temple's gates." "Then let's not keep them waiting!" Proxi chirped. "Let's move!" Mega Man smirked. With us together, this should be a cinch! he thought.
Inside the Temple of Light, an army was gathering. A Primid commander chirped something in its alien language to its master, who replied in a deeper voice and dismissed him. The commander nodded, for he knew this day would come. The day in which the Subspace Army would return with a new master. As he began barking orders to his men, Master Core sensed something in the air. If he had a mouth, he would smile. They were here. "Heroes of all dimensions, welcome to mine." He turned to the "new recruits" awaiting his commands. "The goddess of light and her faithful servant have returned. Go. Show them what I've made of you." He pointed at the gates, and the troops charged.
Outside, the battle was raging. Chun-Li had never faced such foes, but she had won many battles. A well-placed Spinning Bird Kick took down 5 of the monstrosities. As she noticed one on a jetpack taking aim, she focused herself. "Kikoken!" she shouted as a ki ball shot from her hands, exploding into the Primid, sending it crashing to the ground. "And stay down!" Just ahead of her, a mustached figure in red was jumping madly, shooting fireballs from his gloved palms. He dodged energy swords and lasers with each move, with the Primids fighting back. As he took down the last one, he adjusted his cap, which held a red "M" on it. He gestured for Chun-Li as more approached. "Mario. Shall we?" Mario nodded as his fists burst into flames, ready for action! Different streets, same fight. Chun-Li thought as more Primids opened fire.
The two of them focused their energy and unleashed a ball of both ki and fire. "WAHOO!" Mario shouted as he burst forward. Primid war machines clambered forward, only to shudder violently until they were torn apart, revealing Mewtwo, a man-made Pokémon, behind them, his eyes and hands glowing with purple power. The trio nodded and braced themselves for more.
Pit was horrified to see his home like this. All the floating islands were in ruin, with the landscape barely recognizable. It reminded him of the time the Chaos Kin had taken control of Palutena, the goddess of light and his most trusted ally. The angel was also trapped in a ring, which was uncomfortable. With him was Toon Link, a version of Link from an alternate universe. Despite his small size, he was powerful. His sword glowed as he fought alongside Pit. "Not bad, for someone so small!" he commented. Toon Link just saluted him. Pit noticed new foes coming up. He smirked… until he realized who they were. "No…centurions…What has happened to them?" "It's some sort of corruption." Palutena said in his mind. "Who would hold such power?" Pit didn't wish to fight his former soldiers, but he had no choice. Even though they were corrupted, they still fought well.
Suddenly, a blue beam came from above while a centurion was whisked away by a grappling hook. "No need to panic, angel." Samus Aran replied as she came on to scene, along with a Mii Brawler with a grapple function. "They're just taking a nap." "They'll be fine." the Brawler said. He looked at the defeated centurions and their corrupted bodies. "Uh…eventually."
Shulk slashed through Primids with the Monado, counting those he took down. "Seven…eight…nine! Come on Tails, this is getting boring!" To his left, a two-tailed fox was shooting at Jet Primids with his blaster. "Unf! Don't blame me! It's not easy hitting a moving target!" Just then, he got one. "Ha! Six!" Tails yelled. "Shulk! I'm out!" someone shouted. Shulk turned to see Fox McCloud and Falco Lombardi taking cover behind a pile of rubble. He picked up a Primid's blaster and threw to Fox, who opened fire with it. "These things are like cockroaches!" Falco yelled, joining his partner. Shulk lit up the blade of the Monado when foot soldiers were in sight. "It's Shulk time." He said before charging.
"Hang in there, friend." Pit said over a fallen centurion. "I will set you free from Master Core's grip or die trying." "He's going to pay for what he's done!" Mega Man shouted in the distance. "Mewtwo, can you get us in?" "Yes." Mewtwo responded. "We can breach the prison's walls from here." Tails put a finger to his earpiece. "Falco, you ready?" Before Falco could reply, he was attacked. He shot the Primid right between the eyes. "Uh… I'll take that as a yes." Tails and Mega Man nodded to Mewtwo, who opened a makeshift portal using his energy. "This guy better have the answers we need." Falco muttered. "He will." Samus replied. Mewtwo, Falco, Greninja, Fox and Chun-Li leapt through the portal. "He has to," Pit said to Shulk. "Or this is the end."
In the dungeon beneath the temple, the team moved silently. Mewtwo groaned and stopped floating. "Do you feel it?" he asked. "Feel what?" Fox asked back. "The psychic maelstrom of torment and despair." Mewtwo said with one hand on his forehead. "Sucks, doesn't it?" Falco replied, blaster aimed at the corridor. "Every prison's the same. I've put a lot of criminals in their place." Chun-Li explained. Suddenly, the group heard footsteps. "Halt!" a corrupted centurion yelled. "So much for the secret mission…" Fox sighed.
After the guards were taken out, the team found who they were looking for. "What?! Oh no, no no no, bad idea!" Fox gasped. "What's wrong?" Chun-Li asked. "You know who this is, right? Mewtwo, Greninja, back me up here!" "We've got a job to do, Fox. We're not leaving without him." Falco said as he deactivated the security field. He removed Ganondorf's chains and he and Chun-Li hoisted him up.
Back on the surface, the battle continued. "Hope the bird knows what he's doing! We can't hold these guys forever!" Samus yelled. "They'll get the job done." Shulk replied. "They're a small team. Agile." Tails then contacted Mega Man via earpiece. "Mega Man, we're out of time, he's coming." "You see Master Core?" My scope's got a clear shot." "Take it!" Tails converted his blaster into a sniper rifle, took aim at the black, purple-eyed being, and fired. Master Core absorbed the shot and whipped out a purple beam sword, flinging off the cape Primids had made for him. "All teams, engage! Go, go, go!" Mega Man shouted, Mario backing him up. Everyone charged at the enemy.
Master Core dove at Link, who threw a bomb at him. Master Core caught it and hurled it at Tails, making it blow up in his face, knocking him out cold. Pit dodged the blast as Mario threw a fireball, making Master Core leap into the air. The Brawler caught him in his grapple, which Master Core grabbed and slammed him to the ground. Shulk clashed swords with Master Core before he was struck down too. He then grabbed a charging Toon Link by the hat and hurled him at Mega Man, who leapt off Link's shield and dive-bombed towards him. When the smoke around them cleared, Mega Man was sparking.
Before Master Core could finish him off, Samus blasted the beam sword from his hands. He grabbed her by the arm and slammed her into a wall. He fired a laser at Link, who blocked it but knocked him back. "Do you still dare challenge me, little angel?" Master Core taunted Pit. "My will is law here. I will eradicate your kind from this universe." Then Pit and the Mii Brawler engaged him, but they too went down, with the Brawler suffering a chest wound from the beam sword.
Master Core laughed. "Pitiful." He said, standing over everyone's defeated bodies. "Do you see now; how powerless you have become?" He noticed Pit. "Do not weep for your people, Pit. They have achieved perfection. And now, you will be their leader once more." He extended a black, inhuman hand and began chanting in an alien language, beginning Pit's corruption. But before the transformation began, he felt a laser bolt on his shoulder. "Falco Lombardi. Did you have something to add? Some great insight?" Falco frowned as his team hoisted Ganondorf out of the hole they had made to escape the dungeon. "You're going down, you big, black lump!" Master Core turned curiously. "That's it? Some banal cliché? It's fitting that those would be your final words." He summoned a purple swirling portal that rained down lasers on Skyworld.
The fighters got to their feet. "Get us out of here!" Fox yelled. Mega Man quickly opened a portal, which swirled blue as everyone jumped in, traveling back to their base at Smash HQ. As the portal closed, Master Core laughed sinisterly. "Hahahaha…good."