Heroes:
Mario, Sonic, Maka and Soul, and Quote
Dark team:
Shadow, Terra, Espio, and Death the Kid
As for, the villians:
Mephiles, Metal Sonic, and Scarlet Plumber
Secret bosses (after the story ends sort of deal) :
Mephiles's Crystal Spirit:
Galacta Knight:
Side characters/characters that have cameos:
Pikachu, Blair (cat form), Chao
Plot: After Sonic killed Mephiles (from Sonic 06) a mysterious person released Metal Sonic and made him time travel to help Mephiles from being killed by Sonic by being brought into the time of now. Thus, creating an time paradox to where all the worlds come all together to create one huge world. Thus, making it the biggest adventure yet. And within, 1 week. The world will end. So, it's up to Mario, Sonic, Maka, Soul, Quote, Shadow, Terra, Espio, and Death The Kid to save the world from it's fate as well as thier's.
There will be back story to it once I've created the story. I will say this now, if you don't like where I'm going with the story, don't read it. I plan on making this 100 chapters or more long into an epic fan-fic. Also, don't complain on image size, these images were chosen by me and I don't plan on changing them. This is going to be a very long and epic story where it focus's on the areas from mainly Nintendo, Sega, Disney, and Square Enix. It's not completly finished. I DO plan on making the areas for the story. And maybe even, switchin the plot a bit.