Mario and Sonic: Twilightwizard Project

This will be an upcoming secret project about a cross over between the Mario and Sonic Series.
Sorry, but only one Fan Characters will be used, ad that will be Metal Mario (No, not the one you had to fight in the original Smash Bros. A robot double of Mario). 
I will give you guys a sneak peak at the characters being used in the story, however.
== From the Mario Series ==
*Mario
*Luigi
*Toadsworth
*Princess Peach
*Princess Daisy
*Yoshi
*Donkey Kong
*Diddy Kong
*Dixie Kong
*Wario 
*Waluigi
*Bowser
*Bowser Jr.
*Professer E. Gadd
*Rosalina
== Characters from the Sonic Series ==
*Sonic
*Tails
*Knuckles
*Shadow
*Rouge
*Amy
*Cream
*Big
*Espio
*Charmy
*Vector
*Silver
*Blaze
*Dr. Eggman
*Metal Sonic
*In addition to these main characters, the fanfic will also contain famous bosses from the game series, such as Petey Phirana, King Boo, Egg Golem, and the Egg Emperor.
== Story ==
This is the information I will share with you now as a sneak preview. The rest of the story will be uploaded as I write it.
In Sonic's world, Shadow the Hedgehog meets with Sonic and informs him that GUN has requested his presence at their headquarters. 
Tails and the GUN Commander meet them there, and informs them that there have been several recent dimensional breaches between their dimension, and another have been occuring at a rapid rate, and that GUN is requesting that they check them out.
Meanwhile, in Mario's world, Bowser yet again attacks the Mushroom Kingdom. However, his airship fleet is different from before. All of his battleships have metal plating on them instead of the casual wooden platting. They also have more advanced weaponry. 
While Mario, Luigi, and Yoshi are protecting Princess Peach in her castle, a blue robot that strangly resembles a hedgehog attacks them and kidnaps the Princess.
That's all the info I'm releasing for now. 
Gameplay details will be posted soon.