This is how Starlight Glimmer reveals Thomas' past in Starlight Glimmer's Revenge.
[we view Thomas and Starlight Glimmer, face-to-face. Starlight prepares to use magic on him but suddenly stops]
Starlight Glimmer: You should've discovered your past long ago, OpThomas Prime.
Thomas: What do you mean?
Starlight: I mean, [sighs] Primus was only trying to protect you. He didn't want you to find out that you were a Train-Prime. So, now that you have, every Deceptitrain in the universe is after you.
Thomas: No way! That is a lie and you know it!
Starlight: Enough! No it's not! I am telling the truth!
Thomas: No. Then, I'm just...
Starlight: A Train-Prime who has already begun his journey, only.
Thomas: No. This can't be.
Starlight: Besides, Primus would never select an engine who doesn't know a thing or two about his Train-Prime past. Why an engine at your age, you should've become a Prime long ago. [leaves]
[Thomas looks at his scratched Autobot logo. He touches it with a hand then looks at it. It's black]
Thomas: I... I can't do it.
[Twilight Sparkle peaks out from the shadows and gallops over]
Twilight: What did you say?
Thomas: I can't.
Rainbow Dash: [comes out of hiding] You... are... Thomas. Who was the one who took down Megatrain and a million other Deceptitrains?
Pinkie Pie: And who foiled Hunter's plan to capture him.
Thomas: Me! But none of us can...
Rainbow Dash: You can do it, Thomas. Because, all over this planet, there are people who feel like they can't.
Fluttershy: Yeah. Like some little ponies who once spent their days in a friendship-filled kingdom dreaming of the day that they too would save a person from danger and be told: "You did it. You did it, Fluttershy. You saved the day." They need a hero, Thomas.
Zane: Someone, not matter what the odds, will do what's right.
Kai: They need a hero to tell them the impossible can become possible if you are awesome.
Thomas: Well, you are right about one thing, guys. Percy does need a hero. So, I guess I'll have to do.
Pinkie: Yeah! That's the Thomas we know!
Jay: Then, let's go kick some pony and Serpetine tail!
Cole: Sounds like a plan!
Smokescreen: Let's do this thing!
Zane: I am excited to join. [to the Falcon] Aren't you, my robotic feathered friend?
[the Falcons squawks]
Kai: Let's go! Nya, you'll need your Samurai suit.
Nya: Right! [runs off to get it]
Thomas: James, lower your face shield. We need to distract the Serpetine.
James: Right! [lowers his face shield]
Lloyd: I guess we're all set.
Thomas: Then let's...
[Elsewhere, Percy is in a prison cell. Starlight and Pythor come up]
Starlight: Sitting comfortably, Percy? In just a few minuets, the Great Devourer will be unleashed and there will be no one to stop us from getting the four fang blades to do so. And I will finally have my revenge on Twilight Sparkle and her team of dim witted wonder ponies! Isn't that right, Pythor?
Pythor P. Chumsworth: You are very well correct, Miss Starlight!
Percy: You'll never win! My friends will be here any minuet and once they free me, we'll stop you and that Devourer snake. The one that turned Garmadon evil!
Starlight: Too bad, because we've already found the first fang blade and now we only need three more!
Pythor: And once the Great Devourer is unleashed...
Starlight: NO ONE WILL STOP US!!!! [evil laughter]
[the two leave and Percy sighs]
Percy: I hope the others get here soon.
[Outside, our heroes are waiting for the right moment]
Thomas: This is our chance! Everyone, ready?
Jay: Ready as I'll ever be!
Cole: Let's do this!
Lloyd: Let's Ninja-Go!
Kai: I'm ready to kick some serious snake and pony tail!
Thomas: Sssh! Remember, stealth. No one makes a move until I say so!
Jay: [quietly] Oh!
Cole: [quietly] Right!
Lloyd: [quietly] I get it!
Kai: [quietly] Sure!
Thomas: [quietly] Come on, Let's go!
[James sneaks up on Skales and a Fangpyer]
James: Hey, you three!
[they turn around]
James: Yeah, you!
Skales: Who are you? Identitfy yourself.
James: I'm Zoltron.
Skales: We've never heard of you.
James: Just because you haven't heard of me doesn't mean I'm not a villain.
Skales: Oh. Sssso. Why are you here?
James: I am here to join Miss Starlight Glimmer.
Skales: Oh, yesss. She is in her throne room with Pythor.
James: Thank you. [leaves]
Fangpyer: What was that about?
Skales: I don't know.
[Thomas and the ninjas peak out]
Thomas: [whispers] Let's Ninja-Go!
[The Ninja-Go theme song starts playing]
Jay: Do you think we can do this? [looks down at the Serpetine]
Zane: Thomas told me that it's the only way to sneak in.
[The two pounce on the Venomari below]
Thomas: Great jobs, Guys!
Thomas: Now, let's go get Percy.
Kai: Time to jump up! [jumps]
Lloyd: Kick back! [kicks back]
Jay: Whip around! [whips around]
Cole: And spin! [spins around]
[The group races into the hideout]
Zane: We should be on our guard. As well as Serpetine, Starlight has other villains working for her.
Lloyd: Yeah. Like the Overlord.
Thomas: Then, we'd better be careful!
Cole: Come on!
[They tiptoe through the corridoor]
Kai: Wait, I think I heard something!
[they quickly slip out of sight]
Cole: What do you think it could be?
Zane: I don't know but whatever it is, it can't be good.
[Pythor appears around the corner with Airachnid beside him]
Pythor: Have you ever had any trusting troubles before?
Airachnid: Well, I had some trouble trusting Starscream.
Airachnid: And I had trouble trusting Breakdown.
Airachnid: And that's about it really. So tell me about the Great Devourer.
[Pythor and Airachnid disappear from sight and the Ninja and Thomas come out]
Kai: That was close.
Lloyd: Come on! We need to hurry!
[The group runs off down the corridoor and enter the prison]
Thomas: Percy! Where are you?
Percy: Over here!
Thomas: Over where?
Kai: Thomas, over here.
[Thomas and the Ninja run over and find Percy is his cell]