My Little Pony: Equestria Girls/Sodor On Vacation

Disclaimer: I don't own anything MLP EGs and Thomas and Friends related, all those two go to their companies that own them. Also, borrowing some elements from LPFanfic's stories, credit goes to him or her, so expect those. Also, Diesel's human form will be borrowed from LPFanFic's second story and credit goes to Jebens1 for the design of Diesel.

Season 1: Sodor Meets Equestria

Episode 10: Siege in Equestria

Last time, the diesels went through the Magic Buffers on their way to destination: Canterlot High. But they didn't realize that the portal is taking them to Equestria. It was nighttime at Equestria, and all the ponies were fast asleep. Princess Luna is watching the moon, when she heard something sparkling.

Princess Luna: It's the portal, at this hour, ugh, I'll have to notify Celestia, Cadence and Lady about this.

As soon as Luna leaves into the castle, Princess Twilight was sleeping in her bed with Spike by her side, when she heard the portal sparkling.

Princess Twilight: What the…. the portal at this hour? (Sighs) Looks like it's back to business as usual. Come on Spike, we got more guests to sort out.

Spike: Coming.

Just before reaching the halfway point of the stairs, she gasped at the sight of the new arrivals, and so did Spike.

- Diesel's pony form is jet black with a lighter shade of black for his mane and tail, but have a red streak for the mane, dark grey hooves and short, black wings, his horn is dark grey and his cutie mark is his Diesel class, he's an alicorn.

- Arry & Bert's pony forms are colored yellow with green spots, their mane and tails are muddy yellow and are messy, their hooves are dark grey, their horns are yellow and their cutie marks have the initials DW, short for Dieselworks, one of them has a stubble beard on his snout, they're unicorns.

- Splatter & Dodge's pony forms are different from each other. Splatter's is dark grey with purple spots, dark grey hooves, black mane and tail that are shorter, and his cutie mark is an oil splat. Dodge's is dark grey with olive spots, dark grey hooves, black mane and tail but longer and his cutie mark is a spark of fire, they're Earth ponies.

- Norman's pony form is colored red, dark red hooves, black mane and tail with some spiking up and his cutie mark is an oil drum, he's an Earth pony.

- Den's pony form is colored cyan with orange spots, black hooves, mane and tail, but his mane is hanging from the side of his neck, his horn is cyan and his cutie mark is a screw, he's a unicorn.

- Class 40/Bowler's pony form is colored green, black hooves, yellow mane and tail some of it droops, his wings are green and his cutie mark is a silver buffer with a white sparkle on the top corner, he's a Pegasus.

- Dart's pony form is smaller than the others, he's colored dark red, yellow hooves along with his mane and tail, but the two have black stripes and his cutie mark is a bolt, he's an Earth pony.

Princess Twilight: Oh my.

Spike: Twilight, who are they.

Princess Twilight: Thomas warned me there are also baddies on the island, and I believe those are some of them.

Diesel: (Sniffs, exhales) So this is Equestria, perfect, you guys go ahead and destroy some things, I've got something to take care of.

Class 40/Bowler: What are you talking about something you got to take care of?

Diesel: Doesn't matter, now go and destroy some stuff, this place will be your shooting range.

Diesel broke through the door and looked towards the castle, he grinned evilly.

Diesel: Perfect, I'm coming. (Laughs)

His laugh echoed all over Equestria, waking up the Mane 6, while the three princesses also heard the laugh, Princess Luna barged in worryingly.

Princess Luna: Princess Celestia!

Princess Celestia: Calm down Luna, what seems to be the problem?

Princess Luna: Well, somehow the portal opened and then later, I heard laughter unlike anything I've ever heard of before.

Princess Celestia: Hmm, this is rather troubling.

Princess Cadence: What has been going on Celestia, have I miss something?

Lady: A lot has happened since you've fallen ill, I've been filling in for you as temporary ruler of the Crystal Empire. My name's Lady, from the Magic Railroad.

Princess Cadence: Uhh, it's nice to meet you Lady. So, what's been going on?

Lady: Well, to put this to perspective, all my friends come from an island called the Island of Sodor which is a land of sentient vehicles and Sunset Shimmer suggested to bring all my friends to the human version of this world, so that they can join in on their fun.

Princess Cadence: I see, this is interesting. Are these friends of yours friendly?

Lady: Yes, everyone is, but there is a couple that are not so friendly and are willing to ruin my friends' lives just to make them obsolete.

Princess Cadence: Oh, this is bad. So, these bad ones you speak of, what are they like?

Diesel: Ask and you shall receive! (Laughs)

Bursting through the doors was Diesel powered up with his magic, some of the guard's charge toward him, but Diesel shot a blast of dark magic at them which sends them flying out of the castle. One of the ponies saw this and was shocked at the power Diesel is producing.

Pony Flash: Shoot, whoever that is, he has incredible power, I got to put a stop to him.

In the castle, Diesel looked at the 4 princesses and smiled at them.

Diesel: Well now, looks like we have the leaders of this land, how sweet. Now I won't hurt you lot unless you answer my question. Where is my associate that you have locked away?

Lady: Oh, I know who you're talking about Diesel, and we're not releasing him.

Diesel: How do you know my name?

Lady: Because I'm that engine your associate has been hunting ever since he became obsessed with Gold Dust.

Diesel: I don't believe it, you're the lost engine of the Magic Railroad!

Lady: Indeed, I am Diesel.

Diesel: Well now, this is a surprise. Well Lady, where is my associate?

Lady: I'm not bringing you to him, and that's final.

Diesel: Very well then, for you not cooperating, you will die.

Lady: Not a chance Diesel.

Pony Flash: Not if I have anything to say about it.

Just before the two fight, Flash Sentry came in and slammed Diesel at his side, which sends him crashing through the castle wall.

Princess Cadence: Flash Sentry!

Pony Flash: Your majesty, are you okay?

Princess Cadence: I'm fine Flash, thanks, but what are you doing here?

Pony Flash: I saw this poser try to overthrow you princess, so as my duty as guard, I'm sworn to protect you at all cost.

Princess Cadence: Thank you Flash. Look out!

Suddenly, Diesel's sends a blast of dark magic at Flash, which hits him and sends him crashing into a pillar. Diesel came out of the wrecked wall with a scratch on his face.

Diesel: You are going to pay for that boy.

Pony Flash: Sorry buddy, when it comes to royalty, it's my duty to make sure scum like you don't go anywhere near them.

Diesel: Well, excuse me, I have important business with them.

Pony Flash: Well, if you have important business with them, you have to go through me to do that.

Diesel: With pleasure.

Just before, he can do battle with Flash, the same voice is speaking to him.

Unknown: Leave him Diesel, you have something far more important to accomplish.

Diesel: Fine. Sorry, I have somewhere else I need to be, catch ya later, chump.

And he dashed away.

Pony Flash: You're not getting away that easily, punk.

Lady: We better head out to town, because if there's Diesel, there's bound to be his minions to follow.

As the four princesses were racing towards town, Princess Twilight was scared out of her mind because she doesn't know how to combat the Diesels, that was until she heard the Sonic Rainboom, it was the pony version of Rainbow Dash.

Pony Rainbow: Yo Twi, where are you?! I could use some help around here!

Princess Twilight: I'm right here.

Pony Rainbow: There you are, are you seeing this Twilight!

Princess Twilight: Yes, I am.

Pony Rainbow: Who are these freaks?

Princess Twilight: Basically, there is another world known as Sodor, led by an engine named Thomas and all of his friends traveled with Sunset Shimmer to her world for a ginormous vacation. That was, until some of his baddies started coming here and trying to destroy everything!

Pony Rainbow: Whoa, that is crazy! But we got to stop them somehow.

Princess Twilight: We are, with Rarity, Applejack and Pinkie Pie's help. With our combined power, we will defeat them.

Princess Celestia: And you're not along.

Right behind Princess Twilight, was the four princesses.

Princess Twilight: (Gasps) Princess Celestia, what are you doing here?

Princess Celestia: I've come to help you stop those meddling diesels that Lady described.

Lady: I agree, we need to bring them to that portal over there, that way we can repair the damage they've cost.

Princess Twilight: Alright girls, let's round up those diesels. Rainbow, you round the others and help us. Wait a minute, where's the black dude, where is he.

Princess Cadence: Flash Sentry went after him to try to stop him going to get his so-called apprentice.

Lady: Yes, I fear that this would happen. You girls try to round up those diesels, I'll try to get the one getting his apprentice.

Princess Luna: Be careful Lady.

Lady: I will Luna, wish me luck.

As Lady flew away, the others raced off to stop the diesels. The first group (Pony Pinkie, Rarity & Rainbow) encountered Arry and Bert and they started fighting, the second group (Cadence) and her men tried to wrestle Class 40 to the ground, the third group (Pony Applejack, Fluttershy & Twilight) encountered Splatter and Dodge and they started fighting, another fight broke out between Princess Luna and Den and Dart, and the final confrontation is Celestia fighting Norman. One by one, the diesels fall and were immediately rounded up. Inside the castle dungeon, Diesel is searching for his associate when he noticed and felt dark magic coming from the far cell. It was his associate. But he's too shrouded in the cloud that he couldn't see him, only his evil red eye.

Unknown: Very good at finding my location, now, all you have to do is break me free, so that way I can unleash my reign of terror.

Diesel: Certainly.

He powered up his horn and aimed it at the door, he fired it and with enough power, it will bust it down. Running as fast as he can, Flash Sentry was hurrying towards the dungeon to try to stop Diesel. Just before he can stop him, a blast of gold power blasted Diesel and sends him crashing through another wall. It was Lady and she was not happy, nor was Diesel, they soon collided in a heated battle. The battle was so intense that when Flash arrived to see Lady and Diesel in a heated battle, and decided to watch. As the fight still rages on, they powered up their horns and blasted at each other, until a big explosion was heard. After the smoke cleared, Lady was on the ground and as she slowly rose up, she gasped in horror, the prison cell that was holding Diesel's associate has been blown clean off and was flown somewhere else, while Diesel was knocked unconscious from the explosion. Knowing Thomas' biggest threat is out there once again, Lady only hoped that Thomas will make sure that he is once again defeated. She used her magic to levitate Diesel as she brings him with the others.

Lady: Let's make sure these guys don't cause any more trouble once again, Twilight, activate the portal.

Princess Twilight: Certainly Lady.

She activated the portal and with her magic, she threw the defeated diesels into the portal, unknowingly transporting them to the human version of Equestria. After a while, the diesels woke up around the dead of night and examined their surroundings.

- Arry and Bert have dark yellow skin with yellow and black striped hair, wearing a dark purple sweater with an olive green jacket over it, with gray and black details on the shoulders, yellow stripes around the sleeves, black around the inside and black pants with yellow stripes and black shoes (Bert has a short beard and mustache)

- Class 40 has green skin with sleek yellow hair, wearing a dark green hoodie with yellow on the inside, black sweatpants with green shoes

- Splatter and Dodge as humans have different clothing: Splatter has purple skin with brown shivled hair, wearing a gray piercing, dark blue shirt with a dark grey and purple jacket over it, with grey and black details on the shoulders and black for the inside, black pants and shoes with purple lacing. Dodge has olive green skin with dark brown shivled hair, wearing the same piercing, dark red shirt with an olive green and dark grey jacket over it, with the same details on the shoulders, pants and shoes but with olive green lacing

- Norman has dark red skin with black dreadlocks, wearing a black t-shirt with a red jacket over it, red on the inside, yellow stripes around the sleeves and red and grey details on the shoulders, dark red pants and black shoes

- Den has cyan skin with orange spiky hair with white stripes, wearing a black t-shirt with the Dieselworks logo on it, with a cyan jacket with orange stripes for the sleeves along with the Dieselworks logo, black pants with orange stripes and cyan shoes with orange lacing

- Dart has dark red skin with yellow smooth hair with mottled black, wearing a crimson t-shirt with the Dieselworks logo with yellow and black stripes for the sleeves, yellow shorts with black outlining and crimson shoes with yellow lacing.

Dart: So this is what we look like in this world.

Diesel: Yes, I've been to this place before, to help with the Crystal Prep students along with the Sirens, but that didn't turn out well.

Class 40/Bowler: Well, this is one crappy mission that you've sent us for, it's a complete waste of our stupid time. I rather be back at the shitty Dieselworks instead of living in this colorful dump.

Diesel: Don't go backing away from our little meeting we had at the Dieselworks. I told you that the pony place we went there was just the start for your true potential.

Class 40/Bowler: What stupid true potential are you on about Diesel, seems as though you think you're on a revenge quest against the Steamies, but it turns out, you led us on a fricking wild goose chase!

He got so angry that he punched Diesel in the gut so hard, he sends him flying into a lamppost which dented it as he crashes to the ground. The other diesels were surprised by this, even Class 40. His punch exceeded about 1,300 pounds of force.

Diesel: Wow, talk about a mega punch.

Class 40/Bowler: What the actual hell? Did I do that?

Splatter: Well clearly, you did. The dark magic that Diesel gave you must have given us superpowers.

Class 40/Bowler: Wow, I must have superhuman strength. That'll make sure those steamies get what's coming to them.

Diesel: Well, next time, don't do it to your own commander got it?

Class 40/Bowler: Got it, geez.

Diesel: Well then, it's time to seize the school for all of us. Once and for all!

The diesels cheered and raced towards the school to do their despicable things, while at the same time test out their new powers. When they arrived at the auditorium, they decided to test out their powers.

Diesel: Well then, time to test out what our new powers can be. We already know that Bowler has superhuman strength.

Class 40/Bowler: Which I'm already proud of.

Diesel: Let's see what your powers are Arry and Bert.

Arry & Bert: Already on it, boss!

They powered up their hands and suddenly, two metal beams burst from the wall and floated towards their hands, they bend the metal beams with ease. The force to bend metal beams would be about 35,000 psi.

Arry: Well, what do you know?

Bert: We have metal bending powers!

Class 40/Bowler: Interesting, what about you Splatter and Dodge?

The two of them powered up their hands and Splatter sprayed oil all over the floor and Dodge somehow created sparks from his hands, which lit the oil.

Diesel: No, you blasted idiots, we needed the school as our base not our burn box!

He used his magic to reverse the effects.

Diesel: Now we know that Splatter and Dodge has oil manipulation and has the ability to spark fires. Very interesting power combination. Now, let's see what yours are, Den and Dart.

Den brought out another metal beam from the wall with his new Metalbending abilities and Dart created metal constructs to bind the metal into something amazing: The Dieselworks logo.

Diesel: Another metal bender but a metal construct creator.

Den: Well then, we can make one build crew for anyone on Sodor.

Dart: Well said Den.

Norman: Great, some of you are metal benders, sparklers and real juggernauts, what am I?

He soon got his answer when metal gauntlets start appearing covering his lower arms, powered by magic energy.

Class 40/Bowler: Metal gauntlets? How redundant.

Norman: Not really, let's see what these bad boys can do.

When his fists collide, they create a powerful shockwave which sends everyone plowing through the seats, the shockwave was not as powerful now, but when using it to battle someone, the shockwaves could reach the speed of sound.

Norman: Shockwave Gauntlets, nice!

Diesel: Yes, real spiffy Norman, except for the fact they blew us towards the seats.

Norman: Oh, my bad.

Diesel: Now then, with our new powers, we will give Thomas and his friends a run for their money. Now then, let's get vandalizing!

All of the diesels start using their powers to make the school into their own image. Meanwhile, in Equestria, Princess Twilight was pacing nervously with the others seeing this as well.

Pony AJ: Are you sure you are okay partner?

Princess Twilight: No, I'm not Applejack. I'm just worried for the human world. Those diesels are more powerful than anyone else thought, even Lady knows this. There's something bigger going on over there, and I'm gonna find out.

Pony Rainbow: Why not have all of us go with you?

Princess Twilight: Sorry Rainbow, but our human counterparts don't want to see another version of themselves. I've been into their world before and I know the risks, wish me luck everyone.

When she stepped through the portal, many of her friends were worried for her safety, but Spike assures them that she will be okay, and she knows the right people she can trust. In the castle, Celestia looks out into the horizon and hopes her student can get back home safe and sound.

Princess Celestia: Wherever the breeze takes you Twilight Sparkle, I hope they will bring you back home safe. I have faith in you, my student.

When she arrived, it was still the dead of night. She slowly got up and heard laughter. She quickly hid behind the statue and saw Diesel and his flunkies vandalizing the school.

Diesel: Keep at 'em boys, once we finished with our little project, the citizens of this world will know to fear the diesels. But when we find the Steam Team, we're gonna settle a little beef with them. And once that's done, my apprentice will finally gain enough power and take over Equestria, Canterlot High and Sodor all together! (Laughs)

Princess Twilight: Oh no, this is worse than I thought. If those diesels destroy the school, the students will have no way to spread friendship along with their studies to everyone. I must stop them somehow, but what can I do? I know!

She used her telekinetic powers on some of the paint cans, and she threw them at Splatter, Dodge, Arry & Bert.

Arry: Hey, what was that for Splodge?!

Splatter: What, you threw paint cans at me!

Arry: No, you did that to me.

Bert & Dodge: Uhh, make that the two of us! Uhh, make that the two of us!

Arry: Oh brother.

While the four of them argue it out, Princess Twilight couldn't help but chuckle.

Princess Twilight: That will set them back for a while, right now, I need someone who can help me.

She sees someone who see recognized before along with three other people she didn't know, but one because of her look.

Princess Twilight: Perfect. Excuse me, hey.

Flash Sentry: Twilight?

Princess Twilight: Hey Flash, remember me?

Flash Sentry: Hmm, oh yeah, you were that new girl in school way back. I remember you.

Princess Twilight: Thank goodness, who are you friends?

Flash Sentry: Oh, my apologizes, Twilight, meet Vinyl Scratch, Wallflower Blush and Juniper Montage.

Wallflower Blush: Hi.

Juniper Montage: Hello.

Vinyl Scratch: What up.

Princess Twilight: Hi. Listen, I can't stay and chat, I need your help.

Flash Sentry: What is it?

Princess Twilight: Have you heard of the arrival of some of Thomas' friends coming in?

Flash Sentry: Hmm, you know, I've have seen some unfamiliar faces that I didn't recognize, so I guess I've seen it, not heard it.

Wallflower Blush: What's going on?

Princess Twilight: Well Wallflower, Thomas' home, the Island of Sodor, have not only his friends, but also a couple of baddies on the island, and right now a group of them came here and is now vandalizing your school.

Flash Sentry: Are you serious?! Then, we got to stop them!

Princess Twilight: No, don't!

Juniper Montage: Why not Twilight?

Princess Twilight: Because these guys are more dangerous than you realize, they somehow obtained some dark magic they got from their leader. We need the help of Sunset and Thomas' friends to stop them.

Wallflower Blush: Well, last time I saw her along with her friends, they were heading to the Everfree forest.

Princess Twilight: Then that's where we need to be. Come on, we got no time to waste all this world depends on us.

Flash Sentry: We're coming with you. If the world needs saving, then I want to be there.

Princess Twilight: Of course, you can come, now let's go!

And the group raced off to the Everfree forest, meanwhile, at the ruins of the dungeon, a hoof burst through the rubble and out emerged what will be the most dangerous villains in all of history.

- Diesel 10's pony form is colored dark yellow with tan stripes, black hooves, a brown, long man, his tail is shaped like a giant scorpion tail with a grabber, it was Pinchy, he has dragon wings about Celestia's size, one of his eyes has a huge gash on it, but luckily, it didn't damage his eye, he's an alicorn.

As he was struggling to get free, someone approached him.

Storm King: Looks like you're in a rough situation.

Diesel 10: You have no idea mister.

Storm King: Maybe I can help you out.

Diesel 10: How?

Storm King: I could get you back to full strength, and whatever bad thing you've done, I want to help you.

Diesel 10: Really? You would do that?

Storm King: Of course, I would, baddies always think outside the box.

Diesel 10: Well then, this is certainly interesting. How should I know if I could trust you?

Storm King: You have my word.

Diesel 10: Hmm, very well then, you will help me. I have a score to settle with someone for a long time, and I need an army to do just that.

Storm King: If you like, I can help you recruit some of this world's baddies to help you with your conquest.

Diesel 10: Very well, you will do that. I have a list of some of these associates I need to make my conquest happen, from this world and some from mine. The ones from mine I can handle, but the ones from this world, you can take care of that? Can you?

Storm King: Certainly. Call me the Storm King.

Diesel 10: You can call me Diesel 10, welcome to the army Storm King. (Chuckles evilly)

Characters in Order:
1. Princess Luna
2. Princess Twilight
3. Spike
4. Diesel
5. Class 40/Bowler
6. Princess Celestia
7. Princess Cadence
8. Lady
9. Flash Sentry (Pony)
10. Rainbow Dash (Pony)
11. Dart
12. Splatter
13. Arry
14. Bert
15. Den
16. Norman
17. Applejack (Pony)
18. Dodge
19. Flash Sentry
20. Wallflower Blush
21. Juniper Montage
22. Vinyl Scratch
23. Storm King
24. Diesel 10