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English
Series:
Part 3 of Curious Cases in the Multiverse
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Published:
2024-08-25
Updated:
2025-06-12
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1,835
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5/?
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Controlling The Chaos (Not Very Well)

Summary:

You know, Sonic's been to different worlds before. But nothing as unique as this one...
What the heck is this legal system? He can't just run around? Illegal Quirk use!? As soon as Sonic finds his friends, he's taking the next warp ring outta here!

(Or maybe he wants to stay.)
***
Eggman sends all his enemies through a special warp ring. He wins, right? He should have known it wasn't going to be that easy.
Now he's gotta rebuild his empire.

(And maybe make some self improvement too.)

***
Izuku Midoriya is a quirkless less child. Everyone says he can't be a hero. But then he meets Sonic, then All Might says he can be a hero, and if his life gets a whole lot better, he must be in a dream, right?

(It's really not. Sometimes, he wished it was.)

Or:
Sonic, Eggman and friends get Sonic X'd again, except in the world of My Hero Academia. MHA will never be the same, will it?
Highly reader interactive! If you want to comment where you want the story to go, it might just do that!

Chapter 1: New World Unlocked!

Notes:

Key:
Bold = New Character Name, All Might Speaking, and Yelling/Announcing.
'Thoughts and/or quotes within speech'
"Speaking"
Italics = Flashback/Emphasis.
Underline = Emphasis within flashbacks or Extreme emphasis.
Strikethorough = Idk yet

(See the end of the chapter for more notes.)

Chapter Text

Sonic's seen and experienced a LOT of weird things over the years.

From fighting a being that wanted to destroy time, to being sent into Camelot and even getting sent to another world because of a botched Chaos Control where there was a pretty nice kid, Chris.

And then they fought aliens that tried to wipe out all life in the universe with him, good times.

But this time, Eggman, the idiot, decided to make a special warp ring that sends you into another world. 

All his friends were sucked in. Eggman, Sage and Metal were sucked in too, serves Eggman right! But now he's going to have to fight him while finding his friends, so dang it.

Welp, gotta go in now after his friends, he guesses.Time to get sent to another world by Eggman.

(He would complain but the last time it happened, he met Chris, who gave invaluable help to Sonic beating the Metarex, something Sonic and his friends couldn't do at the time because of their in experience, before they even fought the Black Arms, which means they all would have probably lost, against a threat that was probably way out their league. At the time of course, he's very certain that he can beat them nowadays without issue, but it is important to keep in mind what things like this can do for him and his friends.)

Well, he muses, he wants to believe that his friends aren't in trouble. Or making it for that matter... But that probably isn't likely, is it?

Oh my gosh, SHADOW, he's gonna make so many issues...

***

He walked out of a back alley, since the warp ring brought him here... Yuck, there's mold! At least he's not into the middle of the highwa- 

He came to a realization.

'Wait a second,' he thought.

Why isn't anyone looking at him funny?

He can out into the walkway, and people looked at him, so why?

He's literally a blue hedgehog!

Is the world upside down?

Is it like Camelot or the Arabian Nights?

Are there other animal people?

Oh, yeah, he sees an animal person right now.

And he sees a cop too, but he isn't getting chased, so that's a plus... That'd be an issue in trying to find his friends for sure...

-

Sonic thought to himself his goal while walking down the street, taking in awe the sights. He's got a long road ahead of him. When Eggman got all his friends, he meant all. He even got some of them ahead of time.

Tails, Knuckles, Amy, Shadow, Silver, Blaze, Cream, Vanilla, the Chaotix, Mighty, Ray, and more he probably doesn't even know or remember getting sent here!

Eggman was strangely thorough, so this is gonna take awhile for sure...

Welp, let's hope that this world doesn't merge if with Mobius if they stay too long like Earth did... That was a little chaotic.

***

Oh. Oh my. This shall not do!

I, the brilliant Ivo Robotnick, have seemed to find my self in another world! Knowing my chances, that blue rodent is bound to be here too...

Wait!

I must assess my surroundings.

A forest of some kind...

The trees are like Earth's, so it must be a similar world, yes?

Hmm, very interesting... Like the interesting question...

"Where is my daughter... Or Metal? How troublesome. I'll have to establish my empire here as well."

"This shall not do... This world will be mine!"

***

Sonic sees a situation. It seems like some slime villain, or something is attacking a kid around, what, 15, 16? Looks like an angry Pomeranian with that hair... And another kid, green hair is trying his best to get his friend out, around the same age, and he sees some guys that weren't doing anything, but just as Sonic decided to handle the situation, he sees a really big buff dude punch hard enough to force the slime guy out using suction. 

And then, after getting closer, he sees the Pomeranian yell at the bush kid, and then the poor kid gets yelled at by the... Superheroes? While the Pomeranian was getting complements but he walked away...

He decided to follow the bush hair kid to introduce himself. He looked pretty happy after the buff blonde rabbit looking guy said something... What was it? Oh yeah, 'You CAN be a hero!', or something, he didn't pay full attention.

Little did he know the bond he was about to make.

Notes:

Hi guys! Welcome to my second third ongoing fanfiction!
Tell me how you think of it in the comments, and I'll reply as soon as possible!
This has been sticking in my head for a while, soooooo
To be specific on what kind of Sonic this one is, think of the games and the IDW Comics as the basis and adding other things to it. I don't quite know how to describe it right now.

Chapter 2: "They have stories to tell too, you know..."

Chapter Text

You know, Cosmo's seen and survived more than you would think at first glance.

Death, for one, you'd think that you can't just survive death, but you can. Sounds sketchy, but here's the thing—

 

She's living proof of that.

 

She died, or, at least she thought. She sacrificed her life against the Metarex, and resigned herself to the eternal darkness.

 

But less than a second later, she was back. Or it felt like a second. Turns out it's been two years. Two years, she was 'dead. Then, one day, she's back!

 

 

 

It's madness.

 

So, according to Tails, Sonic brought what was left of her— a seed, to him, who grew the plant over two years, until he made a device that can instantly grow plants, initially to help Cream with farming, but he figured out that it could bring her back to life faster than waiting 12 years for her to regenerate. 12, because her body was attempting to catch up in maturity to where she should be when she hits puberty. (Her race hits it slower than the average human girl.)

 

 

Cosmo also discovered that she had near complete control over plants as well, an ability that no other Seedrian had. Astounding, she could do so much with it! According to Tails, it's a side effect of the accelerated growth.

 

Tails, Sonic and friends set up a party to celebrate her being, well, alive, and she met some of their new friends they made before her reawakening, and ho, boy did a lot happen.

 

Eggman showed up, and then opened a portal, then EVERYONE got sucked in, her plants tried keeping her in the ground, but they were uprooted, and she got sucked in.

 

She had never seen anything like what she then.

___

 

Miles "Tails" Prower found himself in a bit of a situation, huh?

Chapter 3: "More and more..."

Summary:

Tails' story.

Chapter Text

Tails found himself in a bit of a situation, huh?

He's in another world because of Eggman. Again.

He just wanted to celebrate his friend being alive again.

He just wanted to spend some time with Cosmo, introduce their new friends, but no, Eggman just had to send them into another world.

Well, at least, he mused, Eggman got sucked up too, and he'll have to rebuild, so joke's on him.

***

Cream asked for help with her plants. They seemed to be dying because they weren't blooming yet, so he had created a blaster that sped up plant growth without taking the necessities resources required.

He soon realized that could help with Cosmo's situation.

***

When he saw the plant grow, grow bigger than him, he thought he made a mistake. Maybe he lost his friend forever. But then, it bloomed, and then he saw his friend again.

***

Now he's here. The Chaos Emeralds and the Master Emerald got put here too, but it's not that bad, he still has his Miles Electric so he can track them down.

He's walking down a street to a library to find the history of this place, when he sees a giant woman stop a giant man, and now he's confused. 

He reads up on the history by going to the library.

So... 

This is a strange world. Not unlike his own, it has super powers.

However, there are quite a lot of difference, and the history books...

He stays in the library for a very long time.

***

Vanilla, Cream and Cheese are very lost.

Chapter 4: "Until you just can't ignore them anymore!"

Summary:

The Vanilla Cream household's story.

Chapter Text

Cream and Vanilla were very confused.

Of course they were, they were sent to another world.

Then again, at least they are together this time, last time they were separated from each other, and all Cream had was Cheese.

They still have to find Chaocola and Gemrl.

Well, hopefully this kind mouse(Kinda, they can't really tell if it is a mouse or a bear,) can help them...

***

Gemrl was fighting. Fighting to protect. Not Cream, but Chaocola, and a duo of... You know, he can't tell but that doesn't matter.

He's fighting a guy who is creating muscles on the outside of his body, and he appears to be powerful, but should fold in-

Yeah, there we go- First a punch on the stomach, then then a little pressure on a pressure point in the neck— there we go! He's done, just like that.

...

Why are people looking at him like that?

Aw man, and now Chaocola is scared too. 

It seems like he's in a bit of a pickle.

***

Silver never saw THIS in his time!

Chapter 5: "Just bubbling under the surface..."

Summary:

Hey! Uh... Sorry for the wait I guess? Man, when life hits hard it hits HARD.
And for those new? Welcome to the chaos I guess.

Chapter Text

Amy Rose is extremely annoyed.

Of course she is! She finally got the opportunity to see her friend again— One that she saw die.

And, after so long, Amy could be happy to talk to her again... Until Eggman decided to show up and screw up everything AGAIN!

So, yeah, she thinks she's justified.

... Getting off track now...

That aside, if her time here is similar to when she was on Chris's world, then she's probably going to have a decent time. (As long as there isn't a merging of timelines like before.)

This world, she decides, is pretty strange.

She sees animal people, but they aren't mobians; they have too similar attributes to humans.

The people here speak Japanese, so she's safe to assume she's in, well, Japan.

That has a LOT of implications and she doesn't want to think about the timeline, so she's just going to read on some history.

...

And of course there's a guy trying to rob the book store near by. Even in another world there's criminals robbing stores.

***

Amy Rose speeds over to the criminal, a guy with... A guy with a anvil for a head?!? Okay, this is getting a little uncanny.

He's about to hit the clerk when—

"Hey!"

The robber turns around.

"How about you pick on someone your own size!"

The irony is not lost on her.

"I'm not beating up a child."

Well, at least he has tact.

She summons her Piko Piko Hammer and the criminal pays quite a bit more attention.

The store clerk speaks up, "Wait! You need to wait for a hero!"

...What? Whatever, she pays no mind. She charges at the criminal, he clearly not seeing the treat she poses, just guarding.

The hammer impacts his guarded chest and proceeds to slam him into the ground, clearly breaking it.

Then, a washing machine enters the building saying "Stop right there villain!" before promptly realizing the robber was taken care of.

"..."

"..."

"You do realize what you did is illegal, right?"

"What?!"

Amy's annoyance has compounded.

 

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