Location: Crystal Palace, Crystal Empire
"Alright, we've heard the news, Twilight." Celestia said as she walked along with her sister, Luna. The two were quick to react and teleported everyone there in time. Twilight nodded in agreement.
"Flurry's still a little 'un, and with that beast on its way, what is the plan?" Applejack said.
"Well, we're glad you asked..." Luna said.
"We will distract the creature and lead it from the Crystal Empire, just enough for you to activate your Rainbow Power and defeat it. If that fails, we'll order a mass-evacuation of the Crystal Empire if it destroys it." Celestia said. She looked out the window to see smoke rising from the outside.
SKREEEOOONK!!!
A roar was heard as the silhouette of the monster was visible through the smoke.
"If that thing destroys the Crystal Empire, then our plan is for naught." Luna said.
The two sisters flew out to meet the beast, which was none other than Godzilla, the long-lost King of Monsters, who has been frozen for millions of years in the ice, waiting to have a great comeback. And now, he will incinerate this city, he still has a lot of rage pent up that needs to be... well.
As he marched towards the Crystal Empire, a beam of golden energy hit him in the cheek. He growled as he saw the culprit, a white pony with both a horn AND wings. He attempted to swat it down with his claws before a blue bolt hit him and saw another pony with both horn and wings, this time blue. Godzilla roared as he attempted to shoot them down with his atomic breath, only for them to dodge at blazing speeds. Godzilla growled, and once the blue one was off-guard, he clasped his hands around her, causing her to black out. The white one sensed this and flew to the blue one's aid with a look of terror in her face.
"Luna!" Twilight said. The beast walked towards the Crystal Empire, ready for its kill.
"Girls, we need to activate our Rainbow Power, stat!" Twilight said as she looked at her friends, who nodded. The six heroines enveloped themselves in lights of their respective coloring and activated their Rainbow Power. Godzilla was about to march towards the Crystal Empire when he saw a ball of light with six ponies inside it. He growled at them and snorted, wanting to be through with their shenanigans.
"Why would we let you past when you were destroying the city? And why can I understand you?" Twilight asked before shaking her head.
"You were destroying cities, causing so many ponies to lose their families, their homes, and worse, their lives. I'm afraid that has to be stopped. You may not think this is true, but we carry magic that resides in out hearts, the magic, of friendship." Twilight said as she and her friends activated the light. First a white bolt hit, then five other bolts, which joined together in one Rainbow of Light.
When it cleared, however, Godzilla stood, completely unscathed and laughed. He let out a faint atomic fireball, vaporizing the sphere of magic and cancelling out the Mane Six's Rainbow Power and causing them to fall to the ground.
"Impossible, nothing can defeat the magic of friendship... how?" Twilight said as she looked at herself, with blood coming out on several spots. She looked to see her friends unconscious, with the exception of Pinkie, who was still awake. They aren't going to die, but they are in very serious comas. She failed. She really failed.
<Really, friendship is magic? Please, from what I've seen, there's nothing magical about friendship. Sure, some may think of it as a magical thing, but that's just it. It's just a mentality, a product of your kind's instinct, if you will.>
"You're lying. Friendship is magic! The most powerful magic of all!" Twilight said as she got up.
<Then why didn't it kill me? Face it, friendship cannot get you through everything. You tried to use your little rainbow on me, and look where you are right now. It's pointless to focus on friendship alone. Look at me. I was the last of my kind, and the humans turned me into the first. I never thought I could be any lonelier, and I had to face my dangers with brute force. I have toppled monsters, a whole pantheon of Hellenic gods, and even escaped from Hell itself, and all of it was by my lonesome.>
"LIAR!" Twilight yelled, firing whatever magic she had left from her horn, even though she knew it would have no effect. It didn't strike him, and instead dissipated before it could go even half-way. Her stress and injuries were getting to her, and her legs gave in and caused her to fall to the ground, but instead of blacking out, a transformation happened.
Patches of her fur fell off, leaving room for black scales to grow. Her mere stump of a tailbone began to lengthen dramatically, making way for a long tail covered in black scales. Her tail hairs didn't fall off, but instead whitened, save for her purple and pink strips. By that point, her entire body began growing as her mane whitened as well. She looked at her front hooves to see fingers spouting out and palms forming. Pretty soon, her newly-formed hands gave way to the black scales.
"No, no, no! It can't end like this!" Twilight said as her legs shifted, her back hooves giving way to toes, yet oddly enough, she still had her cutie mark. Godzilla was equally shocked. It can't be true. Could she really have been his daughter? The feathers on Twilight's wings merged with her flesh, growing black scales and a singular claw on each of them as her horn vanished.
It isn't true, it just cannot be true. Twilight's teeth sharpened as her changes came to a close. Pretty soon, she was what Godzilla is, but she still had wings, pony-like ears, and a cutie mark. She breathed in and out as she processed everything that happened.
"What did you do to me!?" she said. The beast mereley walked up to her and suddenly, grabbed her in his embrace, pulling her into a hug. All the rage was gone, and now he's finally with his long-lost daughter.
"Hold on a second!" Pinkie Pie said before grabbing a glass of water, drinking it and spitting it out.
"WHAT!"
"Pinkie, please tell me what happened!?" Twilight said.
"I don't know Twilight, but he's taking you somewhere, is he?"
"Wait, what the-" Twilight was grabbed by her own father, who walked toward the ocean with her. He couldn't believe what just happened there. His own daughter was killed, but she was there, but how? Nonetheless, he was unaware of it, and so was she. They're now both monsters externally, but in her eyes he could see a smart, kind, and beautiful soul behind them. He wanted to destroy, now, all he wants is to be with his long lost daughter.