Celestia awoke in a dark room, the only lights being the soft, glowing screens of various machinery. Of course, being from a place which didn’t have a lot of noteworthy technology and instead relied on the use of magic, she didn’t know what she was staring at, or how she had even gotten here.  
She tore her eyes from the weird metal structures in front of her and looked around. She hadn’t noticed it before but now she saw how metal straps were holding her against… a metal slab? Yes, it was metal because she could feel the coldness of it against her back.  
…Wait.  
Looking down, she saw a lack of clothes. She was completely naked! Her breasts and the lower parts of her body completely on display! For the first time since her awakening, the weariness seemed to fade away from her and made way for a certain dread. She was bound to a table with no clothes on her body and she couldn’t remember how she had gotten here. This wasn’t good.  
“Ah, you’re awake.” A deep voice said from the shadows.  
“Who… who’s there? How did I get here?!” Celestia didn’t feel vulnerably usually, but this was one of the exceptions.  
The owner of the voice stepped into the light and it was something Celestia hadn’t seen before, nor its species. It looked like a bald ape with the only pieces of hair being on its lip. Oh, and it was shaped like an egg.  
“You can call me Doctor Eggman or Doctor Robotnik if you feel nostalgic.” He saw the fearful and confused expression on her face. “Never mind. I’ll keep it simple so your inferior brain can understand. This is a different world, so not yours. I sent my robots out to capture you and bring you back. Not because you’re special, of course… well, okay, you are a little bit special, but your world is even more so. It’s far more magical than my world, which means that the magic in your world can be a resource I can use for my own desires.”  
As he was giving his little monologue, he walked over to a nearby table to pick up a tablet.  
“I’ve captured you because I need someone familiar with your species to subdue them. Plus, I need a workforce to harvest the magic and at the same time I can add a new planet to my dominion. Basically, I’ve chosen you to lead my armies back to your world and conquer it in my name.”  
Celestia was quiet as she listened to him, part of her mind trying to call upon her magic but somehow, she just couldn’t access it. Whenever she tried to grasp for it, it just seemed to slip away. “What… what makes you think I’m going to do that?”  
“Oh, you’ll see. The organic brain doesn’t really hold any secrets for me anymore. You are talking to a genius, after all. Small note, this may hurt in the beginning.” With that, a devilish grin appeared on his face as he pressed the activate button on his tablet.  
“What? What may hurt? Hey! Answer me!” Celestia shouted as she tried to break free from the metal cuffs, yet all she did was make some noise.  
She could suddenly feel something slide over her horn and as she stared up, she noticed a small, black ring now sitting on her horn with two wires connected to it, leading to a tube which stood next to her table.  
Another thing seemed to move down from the ceiling and soon slid over her eyes. To Celestia, it looked like some weird glasses, but it was actually a visor, connected to the Eggman Network.  
And then, the moment suprême. The tube next to her glowed in a red light and powered on. The two wires attached to her horn began to glow red as well and the visor in front of her eyes did so too. A white spiral appeared on it as well before something else happened.  
Pain. Sharp, stinging pain!  
Celestia screamed out, feeling as if her brain was being fried over and over again. Yet, her torment wouldn’t be over soon…  
—  
About half a day later, Eggman heard the clicking of heels as someone entered his lab. He looked up and could see the prize he had been working on today. Celestia, standing there in all her new glory.  
She looked completely different from before. No longer did she wear her usual white dress or was she naked. No, it seemed she had found a new, favorite fabric. A latex jacket clung tightly to her body, the Empire’s color, red, being the main color of it. White straps were put over her breasts, ending in golden plates, though the jacket did leave the upper parts of her breasts bare, giving it a nice boob window.  
Her arms were wrapped in nice, shiny, and smooth black gloves. Her legs, too, had a nice covering of latex. Long, thigh high boots adorned her shapely legs, black like her gloves and ending in two wonderful high heels, adding to her dominance.  
And looking dominant she was indeed. The make-up on her face, the pose,, her blank eyes, and the fact a flame was burning in the palm of her hand all showed that this was no longer Princess Celestia of Equestria.  
She was now Egg General Celestia of the Eggman Empire, though she had already heard that some other slaves had given her the name Egglestia.  
The new General stood still before her Master’s table and clicked her heels together, saluting. “Brainwashing complete, my Lord Eggman. Now… how can I serve?” She asked, a sly smirk appearing on her face.