A/N: I am not sure on this chapter, more things and events will be explained in greater detail in later chapters.
"…5 years ago Ganondorf tricked Mario into killing Peach which resulted in a nuclear bomb detonating in the middle of the Mushroom Kingdom." Zero said grimly as he scanned the shocked faces of all the heroes "He then murdered Ganondorf... After that, Mario was left completely broken. he doesn't want other people to go through what he had, and he believes that all criminals and super villains must be punished by death. and he did. now almost all of the supervillains from Eggman to Willy are now dead"
"What!?" Mega Man cried in disbelief unable to believe what he is hearing, despite everything he had saw.
"How can Mario, let alone so many of us support him?" Fox cried
Sonic sighed heavily "We don't have a lot of time to go over all of that." He said "But somehow Mario managed to convince at least 90% of all the heroes in the world of trophies to join his new world order."
He looked extremely haunted as he looked up at his alternate counterpart, as if he had fought a thousand wars and is now reliving through it "Link and I, as well as several other heroes knew that Mario was wrong. And we knew that we had to stop him."
"How?" Silver said, as if trying to comprehend a difficult problem. "How can you fight Mario of all people when you are the fastest thing alive? And…" But Sonic raised a hand to silence Silver.
"I may be fast." Sonic said "But Mario is strong, not to mention he has more powerful allies. He got the Metroids on his side, he forced the Pokémons to join him, and he even got his hands on many powerful weapons from Hyrule."
"I don't believe it." Zelda cried "Whats next? Did Mario destroy the entire green lantern corps? Does he have the tri force of power!?"
Zelda looked awkwardly at her counterpart as if trying to tell her bad news by her face alone. There was a deadly long pause, which made the heroes more confused and afraid on what else the resistance isn't telling them.
"You said that you and Link worked together" Shadow said, "Where is he now?"
"Dead." Sonic said sadly "Died 3 years ago. Murdered by Mario."
There was another deadly long pause as all the heroes looked far too stunned to even speak.
Bowser sighed heavily "Everytime we try to stop Mario, something always happens to make things go his way. Almost every year Mario gets more and more powerful, and yet more and more corrupted by power." He said "We tried to use the chaos emeralds, but it failed. The Green Lantern Corps were whipped out. We even used all the magic from Hyrule to even Iblis, but that backfired hard." Bowser looked up at the heroes around the table, his face filled with fear and sadness "We used to be friends. Now I am a 'Double Agent' if you will."
"So what do you want us to do?" Sonic said, looking at his counterpart straight in the eye "Why do you need us?"
Sonic smiled as if he had been waiting for someone to say that. "I have a plan. Its very complicated, however it's the only plan that we have got."
The more Sonic began to explain his plan, the more half of the heroes began to frown as if unconvinced. When Sonic finished, Mega Man spoke up "Sonic" Mega Man said "I know you have been though a lot, however as crazy as your plan is, so many things can go wrong!"
"If you have any other plan I would like to hear it" Zelda said "I have also made it as well."
Mega Man looked conflicted, then he remained quiet.
"Good" Sonic said now opening a door "Now, let us prepare to break into a castle"