Sonic was enjoying himself on one of his runs, but that was quickly interupted when Discord shows himself and uses his chaos magic on Sonic's surroundings. After hearing Discord's plan to steal and use the Chaos Emeralds, Sonic must get to them before Discord. More surprises shows itself once Time Eater is revealed trying to steal the emeralds as well. After a failed attempt, the emeralds scatter into 5 different directions. New friendships will be made, love will also blossom between two of the characters, a lot of action and humor joins this crew on their journey for the Chaos Emeralds. Sonic and the group must team up to stop Discord and Time Eater once and for all.
Crossover involves:
Sonic the Hedgehog; My Little Pony: Friendship is Magic; Regular Show; Adventure Time with Finn and Jake; Ed, Edd 'n' Eddy and Danny Phantom.
My mind just got blown up 100,000,000 times
Well shit.
Hm... Another crossover with Sonic, and Discord as a villain?
I'm just joking with ya. Sounds interesting. I'll read it later.
(But I seriously do have a crossover with Sonic and Discord is a villain.)
2215019 I hope you will enjoy this when you get the chance.
Also, I'll give your story a read when I get the chance as well.
2220064 I just read the first Chapter, and...
I liked it. Pacing was a little fast, and not many details were given, but overall, it kept my interest all the way through.
So far... I'd give it a 4.5/5.
I hope the story is this awesome all the way through.
2220439 Thanks, I'm glad you like it so far.
This chapter is kinda pointless, really. All you need to do is explain to us what point in the show (Or place in fan-fiction) they are, and you could easily put the next time we see the ponies at that point.
This chapter is, and I'm sorry to say this, pointless. But it was well written, so I'll give you that.
2224611 I know I didn't need to, but I never wrote a story for My Little Pony, so I wanted to try and do something like this to get used to writting them. Also, I wanted to let the readers know who I chose for the bad guys in the story.
Uh... Ed Edd and Eddy? Danny Phantom? Really?
The title makes no mention of those shows. Only Sonic.
If this is a crossover between all of those shows, you should change the title to suit all of the shows.
2251127
Little spoiler...It's called "Friendship, Disharmony & Sonic" for a reason. Sonic is supposed to go to each place to get the emeralds and he befriends everyone that Discord comes across. They, in turn, will join him on his quest to stop Discord and Time Eater.
2252292 I'm sorry. I didn't read that little piece at the end of the description.
But, I must say, I don't think you'll be able to pull this off. I'm not denying that you have great potential, but I believe that there are way to many shows here to be handled.
I'll continue to track this, but I seriously doubt that this will turn out well.
No offense.
2285823
I was told the same thing back on dA, and I convinced them otherwise on what your thinking. Thanks for the comment,I know there is a lot of shows put into this, but I think I can make it work.
2290289
So when is the next chapter coming out.
2686134
I'm working on it, I know how I want the chapter to go, I just need to get everything in the middle of it is all. I have two previews on my dA account if you want to see what I have planned for the chapter.
2765275
There's a source link to dA, all credit of the cover goes to him.
FIRST!
After the first 2 1/2,it starts to get interesting,you got me for now.
It's getting better,keep going.
Better and better.
I cant wait to see how the Ed's gonna react.
Who's it gonna be next.
BILLYYYYYYY!
I think the opposite,I'm loving this story.
PLZ make the next one soon,I love this.
2970995 Thank you for the comments, I'm glad you are enjoying the story. As for Chapter 9, I'm finishing up the chapter and I should have it up in a few days, just gotta add a few more things, and edit any changes that is needed.
2969746 Yes, I knew Billy from Adventure Time was going to be the perfect choice to make the story go the way I wanted it to go.
2976892 Well,once you do I'm going to put this in my group called The Shadows of Equestria.This story deserves it.
Ed edd and eddy yay
i'm liking this story already
2977881 I'd like that, thanks.
2978002 I'm glad, thank you.
Cool Story you got there.
2988833
Thank you.
Nomnomnom om nom
Yeah...
Discord has entered a world he cannot control
Y edd Ed and eddy
Sigh
Oh god.... JAWBREAKERS EVERYWHERE
What's up with the text
Well fuck
3051572
The Eds just came to my mind when I first brainstormed this story, and I'm not sure what you mean about the text.
Okay.
Alright. Probably Discord. Could get interesting.
3081329
Well, as you can see with the cover art, that was the reason for me doing this story.
Oh no, a mega crossover.
*starts chanting*
Please don't be bad, please don't be bad, please don't be bad. I want to like this.
Uuuuuuuuh, it's so freaking rushed. The dialogue lines are all mixed up. Why did you get my hopes up?
3081697
I wasn't trying to rush it.
But if you don't like it, then you don't like it, I appreciate the read.
3265434
Thanks for noticing
whenever you start reading this, I hope you enjoy it. 
These are all supposed to be different dimensions right? So how do the Eds and Mordecai and Rigby know about Sonic and his exploits?