After a freak accident happened while saving their worlds, a blue hedgehog and a cyan, rainbow colored mane pegasus meet and find themselves in a new dimension called Earth! In order to survive in this world, they will have to work together to find their missing friends, as well as the Chaos Emeralds and the Elements of Harmony! And with the help of two human siblings Christopher and Katherine Thorndyke, AKA the Thorndyke siblings, they are in for one hell of a ride! However, troublemakers from their worlds such as the evil genius Dr. Eggman and the mad scientist pony Steam, are also here to cause trouble for our heroes! Who will come out on top with the Emeralds and the Elements? Find out in this exciting adventure in Sonic X: Friendship is Universal!

A/N: The MLP side is an adaptation to Super Writer's fan game Curse of The Lost Kingdom. All credit for the original characters and elements from the game goes to him.

While foiling one of Robotnik (Eggman's) plans of world conquests, Sonic is unknowingly sent to Equestria and meets its heroes But he doesn't come alone; something else has followed him to the land of ponies. A power that could destroy the very land beneath his feet.

(Anthro)

Sonic, Knuckles, Tails, and Shadow-along with Angel Island-are blasted by Doctor Eggman to another dimension. Now trapped there, how will they cope in a world of humanoid ponies?

Not all things are peaceful-as an old enemy has been sent along with them.

What happens when Metal Sonic works on becoming the Metal Overlord of the Metal Empire....and decides a dragon we all know and love would make a good tool of terror....the first servant of the Metal Empire to be freed from his prison of flesh....

(Starts right after "Return of Harmony")

Pairings (will be developed slowly):

Sonic+Rainbow Dash

Spike+Rarity (+?)

Knuckles+Applejack

Shadow+Twilight (as voted)

Tails+Fluttershy (as voted)

One night, Princess Celestia was gazing at the moon, remembering the incident that happened less that a thousand years ago when a bright blue light suddenly appears before her. Once the light dies down, a small blue creature and seven mysterious gems that have an incredible amount of power remained. Seeing how young the creature is, she decides to care for it for a while only to see it as one of her own. After seeing how fast it could move she decides to name him Sonic.

Please note this is my very first story so please hold back on the hate.