I'll play as Sean, Rainbow Dash, and Robotnik.

Sean: *resting in tree*

Sean: Firedash, what's up?

Sean: Hello. How are things for you two?

Sean: That's cool. I may be a hedgehog, but my mare is..!
Rainbow Dash: *shows up from nowhere* Me!

Sean: Well, now that we're alone. How about we...
Rainbow Dash: Meet me at my place in 5 minutes

Sean: I'm here Dashie!
Rainbow Dash: Great. I'll get you a ladder so you can climb up

But then, a bomb exploded near the cloudhouse. None of us were hurt, but it destroyed a few buildings.

Sean: Firedash! Over here!! Another one is coming toward us!
Nazis: *shoot at Sean*
Sean: *grabs .44, and shoots Nazis*

Sean: Nazis. They're part of an army that tries to take over everything.
Annoying pony: *runs up* OMG NOT C'S ATTACKED US, AND WHE R GUNNA DY!
Sean: Right. Just go defend Canterlot.
Annoying pony: We need to stae togethuh.
Sean: Fine.

Annoying pony: we need to stae togethuh
Sean: We are. I'm not sure if Firedash is, but I'm with ya.
Annoying pony: We need to stae togethuh
Sean: Stop saying that! FOR ONE MINUTE, COULD YOU PLEASE! BE! QUIET?!!?

Annoying pony: .....
Sean: Thank you
Annoying pony: We need to stae togethuh
Sean: That's it *kills annoying pony*

Rainbow Dash: Why did you do that?
Sean: Did you hear him? And his legs were so skinny!

I gonna be Dan, Natalia, Shadow (I have permission to be theme :P) and GEA Soldiers
-----------------------------------------­---­---­---­---­---­---­---­---­---­---­---­---­---­---­---­---­---­---­---­---­---­---­---­---­---­---­
Dan Shadow and 2 GEA Soldiers come on ground
1# GEA Soldier - STOP!
2# GEA Soldier - ummm sir you now....
Dan - oh yes ekhem... STOP RIGHT THERE CRIMINAL SCUM! I ARREST YOU ON CELESTIA NAME
Shadow - we have only 2 rooms in fail... AND THERE THOUSENT OF THIS
Dan - yea... *look at sean* what the fuck is that?

Sean: I am a hedgehog, and I helped save Equestria many times.

Dan : verywell... My name is Dan the general and cretor of GEA, Global Equestria Army... well maybay not global because we dont look to Ponyville for loot of time but... errrrr... you know... job... Im here on Celestia name to stop that... NAZIS!!!... From destoying this butyfull ci- *punch German Pony Bot destroying his head* What I Sa- OH YEAH This Butyfull city...
Natalia : *come from corner in nurse wear* *look at dead Annoying pony* well I see he saying somethink like "We need to stae togethuh" do Im right... no I dont gonna heal him... never...
Shadow : well Im Dan brother *smile*

Dan : hello there Im alsoe prince of Dark Empire... maybay you dont know this empire because is in cure....

Sean: And my girlfriend is Rainbow Dash
Rainbow Dash: The one and only!

Meanwhile at a Nazi base

Robotnik: What's happening?!
Nazi captain: They seem to be forming an alliance. We gotta stop them!
Robotnik: Alright. Get your men ready, and roboticize ponies for me. We need this world to burn to the ground!

Dan : well *drink water* cool...
Shadow : Hey Dan they send mechs!
Dan : good because that Nazis is soo close
Mare Mech Pilot : What to do?
Dan : Destroy that NAZIS!!!!
all Mechs : *attacking NAZIS but dont destroying city*

Sean: *shoots Nazis*
Robotnik: We must advance *roboticizes pony*
Sean: *jumps on robotic pony*
innocent mare: *runs away*

Dan : WHAT THE
Stalion Mech Pilot #15 : I CAN HO- *silent*
Dan : demn... ok... HERE I COME *half change into mech* lets... rock... *flys up and shoot every single Nazi with minigun* ANYONE NEED MECH HELP!

Sean: All good. I just gotta get my car. *runs to it*

Dan : hmm *saw missle* NO! *missle hit dan* *falling on ground*

Sean: *returns in car shooting Nazis*

Dan : *woke up* uhhh my head... *wstand up* ohhh... Dont have any power and feel dizzzzzzzzz *fall on ground and sleep*
2 Nazis Ponies : *going to Dan*

Sean: We'll get him in my car.

Sean: *drives to hospital*
Nazis: *follow in trucks*
Sean: These guys like us too much.

Sean: You just dealt with two trucks. Amazing.
Nazi sgt: *driving panzer*
Sean: Allow me *drives to the left*
Nazi sgt: What a retard
Sean: *grabs tank*
Nazi sgt: Nein!
Sean: *throws it* All that while in the driver's seat.

Dan : *woke up* woops I think I go sleep... *look at Nazi with rocket launcher* OH I REMEMBER YOU! YOU HITED ME WITH THIS ROCKET!!! *fly behaind Nazi and cut him on half* REVENGE!!!! *back to car* where we going?

Sean: We were taking you to the hospital, but you seem fine now.

Dan : well y- *look at destroyed mech arm* you need take me to mechanic who is sciensist to and know how to make half pony and half mech... any suggestion where w-
Steven : *fall to car* (steven geting in ^^) ouch... oh sorry Im get in to your private car... well I fall on... DAN!
Dan : hiiiii.. ouch...
Shadow : *arraive in car* WHATSUP!
Dan : realy... our old car... lol... IM GETING IN! *jump to car*
Steven : I will go too *jump to car*
(car Shadow come in Poland named "Maluch" in English launge toddler :P )

Sean: That was wierd

Steven : *repair hoof*
Nazi : *shoot rocket in Car district*

Sean: *grabs rocket* Nice try *throws it at Nazi*
Nazi: *runs, but dies*

Robotnik: This is unnacceptable!! We need to do something about this immediately!
Nazi lieutenant: What?
Robotnik: We need Sean to be roboticized.

Nazis: *marching through town square playing this song*
Sean: *hiding on top of building* They don't know when to quit.

Dan : *punch himself with mech arm* ouch... demn you prototype!... *punch again* ... I gonna hande this...

Sean: No *loads MG* I will handle this *shoots Nazis*
Nazi soldiers: *take cover, and return fire*

Sean: *shoots other Nazis*
Nazi captain: We found him, and he's killing our men!
Robotnik: Prevent him from doing that!
Nazi captain: Yes sir

( someone jumps from tree and takes fire for Sean )

Sean: I had them.
Nazis: *shoot at both Sean & Galaxia*
Sean: Time to go downstairs *heads for car*

( flips in air and pins Nazis. OH and btw, I didn't read everything, so can you exsplain? )

There's not much that happened yet. A person named Robotnik wants to destroy Equestria. His army consists of Nazis, and roboticized ponies. You gotta help me, Sean the hedgehog to stop him. We are about to make an escape in my '69 Corvette.

good. I thought Nazis was a good guy for a second. ( Galaxia gets off of him has little mercy )
Galaxia: Get outta here. You've had enough. LETS GO SEAN! BRING THE CAR AROUND!

Sean: *drives to Galaxia* These guys won't give up.
Robotnik: *shoots missile*
Sean: oh.... SHIT! *jumps out*

( throws missile back and eyes glow red, and a twig floats in air and attaches to her )

Sean: Looks like I'm not the only one with the power. Let's keep going.

Galaxia: FORGET IT! ( grabs sean and runs at the speed of 1,000,000,000,000,000,00 cheetahs times 900,000,000,000,000,000,000,000,000,000,00­0! )

Sean: My car!! Fuck!

Galaxia: oh yeah, ( goes back and grabs car then goes back )

Sean: Thank you. What's your name?

Galaxia: Galaxia. Queen Galaxia. But I need help.