Kind of a follow-up to another pic by jebens1, but since that first pic isn’t pony-related, I decided to just upload this one.
 

 
Now part of Chapter 4 of I Love Being A Rainboom. But there’s no conflict between the Turtles.
 
 
(Soon the ninjas park the Hauler in an alleyway, then both Turtle teams and Rainbooms hide in another ally closer to the Dragons)
 
Donatello: According to the news report, this is the area the Purple Dragons were seen last.
 
Applejack: and there they are.
 
(They all look to see them)
 
Donnie: What do you think, April?
 
April: (sensing) Something’s wrong. I sense the Dragons but I don’t sense Hun anywhere.
 
Leonardo: Either way, there are innocent lives at stake! We need to strike now!
 
Starlight Glimmer: Maybe some of us should keep an eye out for Hun?
 
Sunset Shimmer: Yeah. I don’t know about your Hun, but our’s is pretty clever.
 
Leonardo: There isn’t time! We have to stop them before they hurt someone!
 
Raphael: Besides, if dese boozos are anythin’ like aur Hun and Purple Dragons, dis’ll be a snap!
 
Leo: I wouldn’t be that arrogant if I were, Raphael!
 
Raphael: Well, yahr not me!
 
Leonardo: And what do propose we do, Leo? Use magic against them? Kick them in their crotches?! Any other dishonorable tatics?!
 
Leo: Maybe I should go out and invite them to tea!
 
Fluttershy: That would be nice.
 
Leonardo: Enough! We’re wasting time! If none of you want to follow my lead, then you can sit this one out!
 
Leo: Okay, we will!
 
(the 2003 Turtles head out)
 
Michelangelo: If we do have tea, do you think you can make some cupcakes?
 
Raphael: C’mon, Mikey!
 
Michelangelo: Oh right! (Quickly follows)
 
Princess Twilight: Are you sure about this, Leo?
 
Leo: To be honest… Leonardo wasn’t wrong about some things, or about saving the people first. But this gives us a chance to keep an eye out for Hun.
 
(With the Purple Dragons)
 
Male member: (after smashing a eletronic store) This stuff is so lo grade!
 
Female member : Yo, Fong, you sure the Turtles are gonna show up?
 
Fong: That’s what Hun’s plan is. Those shellheads can’t resist helping folks in trouble!
 
Leonardo: (off screen) Exactly!
 
Fong: Huh? (Gets kicked)
 
(The other Turtles arrive)
 
Leonardo: I think you’ve all caused enough damage here tonight!
 
(The Purple Dragons look confused)
 
Fong: Who are you guys?
 
Tsoi: They kind of look like those ninja turtles.
 
Michelangelo: Duh! We are ninja turtles.
 
Sid: Yeah, well, you’re not the turtles we were counting on showing up!
 
Leo: No! We have more honor than those turtles!
 
Fong: Whatever you turtles are, this neighborhood is ours! So slither back to the ocean you came from!
 
Donatello: Technically, we’re fresh water turtles.
 
Raphael: Less tawkin’, more butt kickin’!
 
Fong: Get’em!
 
2003 Turtles: It’s Ninja Time!
 
(The Turtles fight the Dragons the same way they did when they first faced their Purple Dragons, and soon the whole gang is on the ground, then they get up and run away)
 
Leonardo: (turns to where the ninjas and girls are) As you can see, in a fair fight, we were more than a match for these guys! And we did it by souly relying on our ninja training! And not any
 
(A small device lands at their feet and explodes, sending the turtles on their shells.)
 
???: Well, aren’t you noble.
 
(Then they look up to see the Purple Dragons looking down at them.)
 
Fong: Too bad that doesn’t work here out on the street!
 
Leonardo: What?! But we ran you off?!
 
Sid: It’s called acting, lamebrain!
 
Tsoi: And you chumps fell it!
 
Fong: Oh, and by the way, that little explosive’s not the only surprise we got for yah!
 
(The Purple Dragons wip out some Kraang Blasters and other Kraang weaponry)
 
Michelangelo: What are those?!
 
Purple Dragon male 2: Just some weapons our boss looted from TCRI, before we ended up here.
 
Donatello: TCRI? That would mean those weapons are Utrom technology!
 
Female member 2: Utrom? These are Kraang weapons, Nerdtile!
 
Fong: Let’s see you guys try and take us on with these bad boys! Round 2, Turtles!
 
(the ninjas fight the Dragons again, but the crooks start to get the upper hand, due to the Turtles slower reflexes and the Dragons combination of the weapons and playing dirty)
 
(Raph screams before charging at Tsoi, who just knocks him over with a tech hammer)
 
Twilight: (to Leo) Should we help them?
 
Leo: We could, but Leonardo might think it’s dishonorable. Besides, I’m looking for Hun.
 
(Donatello wacks a few Dragons with his staff, until two of them zap him from behind with Kraang zapper-sticks. Then they grab him bash his head on a parking meter)
 
Fluttershy: I can’t watch this!
 
(Michelangelo fights off more Dragons, before facing a female member, who gets him off guard by kissing him, leaving him stunned, then she shocks him with a Kraang zapper, leaving him dazed, before she punches him left and right and knocks him off his feet with an upper cut.)
 
Female dragon: No offense, but you need serious mouth wash.
 
Michelangelo: Aiyiyi…… yi….
 
(Leonardo gets double teamed by Sid and Tsoi like when they first fought the foot.)
 
Raphael: (kicking some dragons) Yeah! Who want’s sume! Yeah-heah! (A dragon distorts him with a Kraang explosive then Sid and another big member punches him back and forth)
 
Raph: Their fighting’s better than our other counterparts, but their reflexes are a little slow.
 
Donnie: Not to mention, those Kraang weapons are giving them a serious disadvantage!
 
(Raphael is blasted with an energy wave gun, like Bebop once had)
 
April: (senses something) Oh, no!
 
Starlight Glimmer: What is it?
 
April: Hun…
 
(The Turtles stand up)
 
2003 Turtles: It’s ninja time!
 
(They attack together taking out a lot of Dragons and destroying their weapons. But afterwards, they stop to catch their breath, as they are hurt and tired, which the Dragons take notice of)
 
Fong: What’s the matter, Turtles? Getting tired? If I didn’t know better, I’d say you turtles are weaksuace!
 
Tsoi: They didn’t even use smoke bombs and ninja stars!
 
Sid: Yeah! What kind of ninjas don’t use those things?
 
Leonardo: Ninjas… who value the traditions… of Bushido!
 
???: More like ninjas who are incredibly stupid!
 
(The Turtles turn around and are wacked into a wall, then they look up to see Hun towering over them)
 
Raphael: Who da shell are you?!
 
Hun: You may call me… Hun! (Roars)
 
2003 Turtles: You’re Hun?!
 
Michelangelo: He looks like an ugly version of Bruce Lee.
 
Hun: And you four are pathetic!
 
Raphael: (as they get up) We’ll show’ya who’s pathetic!
 
(The Turtles attack Hun)
 
Raphael: (while dodging Hun’s strikes) Man, and I taught our Hun was ugly, but you look like somethin’ aur toilet spit up! (Hun slams his fist into his gut, knocking the wind out of him, then grabs him by the leg and uses him to smack his brothers off their feet, and bodyslams him all over)
 
Hun: Anything else you would like to say? (Pounds him into ground and kicks him away)
 
(Donatello and Michelangelo try to double team Hun, but he blocks their attacks before he knocks Donatello aside then strikes Michelangelo repeatedly before knocking him away. Donatello recovers and trys to hit him with his staff, but Hun dodges it before elbowing the turtle to the ground, then he grabs his legs, spins him around, and throws him into Michelangelo)
 
(Leonardo jumps in and repeatedly kicks Hun in the chest, backing toward a wall. Then he leaps in, only for Hun to dodge at the last second and slam him into the wall. Then Hun grabs him and slams him again and again into the wall, making him drop his swords, before punching him into hid brothers.)
 
(Then the Purple Dragons run up and stomp and beat on them before Hun shouts)
 
Hun: Enough! (The dragons stop and back away)
 
Michelangelo: Are they giving up?
 
Hun: You couldn’t be more wrong! (Lifts up a car)
 
(The Turtles scream as Hun smashes it down on them)
 
2012 Turtles and Rainbooms: Ooooo!
 
Casey: That’s gotta hurt!
 
Leo: Alright, time for the plan! (To the CMC) You three know what to do?
 
Apple Bloom: You bet!
 
Scootaloo: Yeah!
 
Sweetie Belle: But Donatello took the keys to the Hauler!
 
Karai: You mean these keys? (Reveals she has them, before tossing them to the girls)
 
Leo: Now, hurry! And wait for my signal.
 
(Hun lifts up the car and throws it away. The Turtles groan in extreme pain. Hun picks up Leonardo’s swords and stands before the defeated Turtles)
 
Hun: Like I said, you are pathetic! (Breaks Leonardo’s swords to pieces) I’m only sorry that it is not our Turtles I will end tonight. Oh, well. One set of Turtles is better then none! (Raises his fists)
 
Leonardo: (looks at Leo) Okay, I’ll admit it. You were right!
 
(Hun is bombarded with smoke bombs and is knocked away by the ninjas)
 
Hun: You!
 
Raph: We heard you expecting us, Hun.
 
Hun: Attack!
 
Leo: Ninjas, take’m down!
 
(The Turtles and Rainbooms fight off the Purple Dragons)
 
Sid: This time we’ll pry your shells off!
 
Leo: I don’t think so!
 
(Sid attacks only for Leo to jump kick him down)
 
(Mikey faces the female Dragon from earlier)
 
Mikey: I don’t appreciate what you did to my counterpart! Allow me to return the favor! (belches in her faces)
 
Female dragon: (gags) Ugh! Oh no! (Mikey knocks her off her feet and Pinkie Pie catches and body slams her to the ground)
 
Pinkie Pie: What did you eat?
 
Mikey: Garlic and licorice pizza. Belch!
 
(Donnie and April tag team against Tsoi while Karai and Fluttershy team up against Fong)
 
(The 2003 Turtles watch in shock)
 
Donatello: You know, seeing them fight their Purple Dragons compared to the way they fought ours, they don’t seem so wreckless now.
 
Michelangelo: Yeah!
 
(Leonardo only looks in disappointment at his katanas)
 
(Twilight Sparkle lifts Hun up with her magic and Applejack uses her magic strength to knock him close to another alleyway)
 
Leo: Now, girls!
 
(Bright headlights shine on Hun and he turns to see the Turtle Hauler with the CMC at the wheel. Apple Bloom floors the gas and drives the Hauler right into Hun and smashes him against a wall, knocking him out. They back up and Hun falls on the ground unconscious)
 
Fong: Let’s get out of here! (Throws a small explosive that keeps the ninjas at bay, so the Dragons can escape with Hun)
 
April: (hears police sirens) We better get out of here!
 
(Sunset and Starlight help Raphael, Donnie and Casey help Donatello, Mikey and Pinkie help Michelangelo, and Leo and Princess Twilight help Leonardo while both Leos don’t even look at each other)
 
Applebloom: So where to?
 
Michelangelo: Uh.. She’s not driving, is she?
 
Applebloom: (jumps off the drivers seat) I’m not even old enough for a learners permit. I was just asking.
 
Donatello: I’m too weak to drive. Can you, Donnie?
 
Donnie: I’ll try. (gets in the seat) Can’t be too different from the Shellraiser.
 
(As everyone piles in, a beeper goes off. April answers it and it’s O’Neil)
 
O’Neil: Bring the guys back to the lair. Quickly.
 
April: We’re on our way!
 
(Soon they arrive back at the lair and help the 2003 Turtles in)
 
Jones and O’neil: (they run over to them) Guys!
 
Master Splinter: My sons! (He hurries over) My sons!
 
Jones: You guys okay?
 
Raphael: If by okay you mean, we’re in excruciatin’ pain! D’hen, yeah, we’re just peachy!
 
Michelangelo: I can’t feel my everything!
 
Sunset Shimmer: It was our Purple Dragons and Hun!
 
Fugitoid: We know! We saw the whole thing on the monitors.
 
Donatello: And I thought our Hun was tough, but that guy?! He’s like a machine!
 
Michelangelo: A war machine!
 
Raphael: If I evea run into dhose Purple Dragons again, I swear, pow! (Bones crack) Ow!
 
O’neil: Easy, Raph. (To everyone else) They need first aid, and fast!
 
Leo: Actually, April, me, Twilight, Sunset, and Starlight have something that might help.
 
O’neil: What is it?
 
Princess Twilight: It’s better if we show you.
 
(They look to Master Splinter, who nods, giving them permission. Then they lay the Turtles on the floor)
 
Leo: Okay, guys, just relax.
 
Michelangelo: Um, this isn’t gonna hurt, is it?
 
Starlight Glimmer: Quite the opposite, actually.
 
Leo: Rin. Pyo.
 
Princess Twilight: Toh. Sha.
 
Sunset Shimmer: Kai. Jin.
 
Starlight Glimmer: Retsu. Zai. Zen!
 
(Their hands glow and they place them on each of the Turtles: Leo on Leonardo. Princess Twilight on Donatello. Sunset on Raphael. And Starlight on Michelangelo)
 
Leo, Princess Twilight, Sunset, and Starlight: Mu. Ryo. Ju. Son. Mu. Ryo. Ju. Son. Mu. Ryo. Ju. Son. E. Sai. Nyu. Rai!
 
(When their done, the Turtles all get up as if they were never hurt at all)
 
Raphael: (shocked) What da shell?!
 
Michelangelo: (leaps to his feet) Woohoo! I feel like a million bucks!
 
Donatello: (so befuddled, he can’t find the words) What? How? Where? Huh?
 
Pinkie: Well, that leaves out Why and Who, doesn’t it? (Both her and Mikey chuckle)
 
Leonardo: What did you do?
 
Leo: It’s a technique our Master Splinter taught me. It’s called the Healing Hands. It’s helped us a lot in the past.
 
Karai: It’s how Father got the mind wurm out of me.
 
Princess Twilight: Leo taught the three of us the first time the guys came to Equestria after healing a guard with it.
 
Jones: So dat little trick of yours can heal just about anythin’?
 
Starlight: Anything. Not everything.
 
O’Neil: I’ve got to learn to do that.
 
Raph: (to Leonardo) How’s that for dishonorable?
 
(Leonardo just walks away with a frown on his face)
 
Leo: Really, Raph?
 
Raph: What?
 
Leo: I think he suffered enough.
 
Leonardo: No. He’s right. Labelling you dishonorable was uncalled for! And for that, I humbly apologize to you, your brothers, and your friends, for calling you out the way I did. And I also apologize for not listening to your concerns. We underestimated your Purple Dragons
 
Leo: Well, to be fair, we didn’t know they had Kraang weapons, or that Hun was gonna ambush us, either. So, we’d probably would have made the same mistake. But I accept your apology. (Bows)
 
Princess Twilight: As do the rest of us.
 
Leonardo: And I should have known that just because you don’t follow Busido, doesn’t mean you don’t mean your not honorable. And you certainly show me honor by not saying ‘I told you so’.
 
Leo: Now where’s the honor in that?
 
Mikey: And to show you our appreciation, I present to you, the eternal pizza! (Holds up the disgusting slice)
 
Leonardo: Uh, I think we’re good, Mikey.
 
Michelangelo: I’ll take it! (Takes the slice and eats it. Then notices everyone staring at him) (mouth full) What? I was hungry.
 
Sunset Shimmer: What worries me is how the Purple Dragons from our world came here?
 
Donatello: Or what other enemies from your dimension are here too?
 
Both Raphs: Aw, crud/sewer apples!
 
The 2012 Purple Dragons arrive at an old building)
 
Hun: That was a bust!
 
Fong: Yo, Hun, you said these weapons you stole could take out the Turtles!
 
Hun: And they did! Just not on our Turtles! But then again, this technology is of the Kraang, and the Turtles and Rainbooms have spent their whole lives fighting those blobs! If we want to destroy both those turtles, we need better weapons!
 
???: Perhaps I could be of some assistance? (The Dragons look to see a figure sitting in a chair facing against them)
 
Hun: Who are you? Show yourself!
 
???: Of course. Where are my manners? (Turns around, revealing himself to be a robot man) I am Dr Baxter Stockman!
 
Hun: So you are this worlds’ Baxter? You a robot in this world?
 
Baxter: Unfortunately, due to some minor setbacks. And disagreements with co workers.
 
Hun: Give me one good reason why I shouldn’t crush you like a tin can! (Grabs Baxter by the collar)
 
Baxter: I don’t think it’s me you want to crush, Mr……
 
Hun: Hun.
 
Baxter: So you’re Hun from the other world. From the looks of things, you’re more clever and brilliant from your counterpart here. What if I told you I can give you the power to defeat the Turtles and their friends?
 
Hun: (puts Baxter down) I’m listening.
 
Baxter: Of course. But first let me introduce you to my new business partner. And I think he’s familiar to you.
 
(Out from the shadows comes Stockman in his battle suit)
 
Hun: Stockman.
 
Stockman: Hello, Hun. Long time no see…
 
 
Quotes by jebens1 and TMNTony
 
Princess Twilight’s weapon by BozzerKazooers
 
Equestria Ninja Girls by DarkMagicianmon