Royal Guard Program

“Alright, first one.” The unicorn doctor called to the forming line. Stepping forth first was Crimson. The now mare was shivering a little, especially with how uncomfortable being in this restricting armor and clothes was. As soon as he stepped close enough, the unicorn’s horn ignited, magically drawing a curtain to give them more privacy. “Alright, so what are you feeling?”

“I feel-” Crimson said, only to cut herself off. Her voice, which was previously a much deeper and gruff voice, was now much softer and feminine. “I-I feel…weird.”

“Weird, how?” The doctor asked, looking the mare over. “I need a more detailed description of what you are experiencing for the Princesses.”

“I…I understand.” Crimson replied, her tone sounding so timid. She wasn’t sure what she was feeling. He was confident, he was proud, and he was always quick to laugh. But now, she felt so scared, so vulnerable, and yet there was a small burning feeling deep inside her. “I feel…hot, but cold. I feel like I can be attacked at any moment, and yet I don’t want to run. But the feeling of eyes watching me is making me so…so uneasy.”

“I understand.” The doctor said, writing something down before gesturing a pen towards Crimson. “Alright, that should be good enough. I want you to drop the clothes and armor so I can give a more in depth medical analysis. Crimson hesitated, which only caused the stoic doctor to stare him down. “I have many different examinations to do, so don’t waste my time.”

Back as a stallion, Crimson wouldn’t even hesitate for a second to strip naked. He was proud of his cock, and getting a doctor to note how big and girthy it was, was the highlight of his physical exams. But now that she was a mare, there was just something so wrong about this. He, or rather, she didn’t want some stallion looking at her like this, despite the fact he was a medical professional. A sliver of fear ran through her mind as she was trembling a little. But there was just something in his eyes, a commanding presence that made her not want to make him angry.

Carefully, and with some hesitance, Crimson stripped off her armor and clothes. Once freed of her restrictive and awkward clothing, she got a much better look at herself. She no longer had a dick, it had been replaced by a puffy, and soft pussy. For a moment, she considered touching this new feature of her body, but paused as she was still being heavily monitored by this unicorn doctor. Aside from her pussy, as well as her much more curvy and wide hips and ass, her tits had swelled until they were at the very least a noticeable and surprisingly tender size.

“Alright, so I see that the change has fully taken effect.” The unicorn doctor commented, placing a stethoscope on her body. The sudden chill of the metal sent another shiver throughout her body. “Fully genital changes have happened.”

The doctor’s words were becoming little more than mumbles, and all Crimson could feel was the increasing sense of unease to have such a strong and serious stallion touching her like this. For a brief moment, her mind raced back to some memories of how she was as a stallion. He had never known this was how a mare felt to be at the mercy of a stallion. But as soon as what some would call guilt came to her mind, she shook it away.

“Alright, you’re all set.” The doctor said, his words shaking Crimson from his thoughts. “The Princess has provided a spare set of clothing that should fit your new form.” He gestured with a hand towards a small curtain pathway. “Just follow that way and take your new clothes.” As soon as Crimson started walking away, he looked to the curtain blocking the line. “Next!”

Maverick was the next one in, and she seemed to have a much more confident look across his face. Her armor and clothes hung just as uncomfortable as it did on Crimson. Strutting her way over to the doctor, she was as smug as she had been as a stallion. From a first glance, her body didn’t seem to change as drastically as it had been for Crimson, but it was clear she was now a mare. Her face was much smoother, mane longer, and her hips were a bit wider. The armor blocked what her new pair of tits, or how slim her midsection appeared.

“Alright, strip out the armor and clothes.” The doctor said, only to see Maverick barely gave a single moment of hesitation before fully stripping out of her clothing. “Very good. Now hold still, while I examine you properly.”

“Take your time.” Maverick responded, her voice almost sounding flirty and seemingly unphased by the now higher pitch in her new tone. “By all means, let me know if there’s something good.”

The doctor said nothing about Maverick’s words, only focusing on his examination. Taking his stethoscope and looking over the mare’s body. From what he recalled from the last time he had looked over the pony’s body. Where was a rather average, but well built abdomen was now softer but still very slender. The hips were wider, but not too wide. And her new chest was bigger than they were before, but more modest than voluptuous.

While the doctor examined her, Maverick was enjoying the feeling of having her new body looked over. Back as a stallion, he always believed mares had it easier than stallions. As well as this, he saw nothing wrong with being more than a little assertive when it was obvious the mare was coming onto him; especially when they were playing hard to get. Though she had to admit, it was more than a little terrifying when Celestia made a mention that she knew about some guards who were harassing the mares.

“Alright, nothing seems out of place.” The doctor said, his words taking Maverick away from her thoughts. “How do you feel?”

“I feel great!” Maverick boasted, as if just being a mare was feeding her old, stallion ego. “I have nothing to complain about. I look hot as fuck, I feel great. There’s nothing I can say is wrong.”

“Very well.” The doctor commented, writing down his notes before continuing, gesturing a hand as he had before. “Alright, just go that way, dress in your new clothes.” Maverick chuckled, though with her new voice, it was like a giggle. “Next!”

The rest of the former stallions went through the same form of physical evaluation as Crimson and Maverick had. Nimbus’ body was almost a complete reversal of what he was before. Where he was just a somewhat rounded pegasus, was now a slender and alluring looking body. Tits that were putting the other new mares to shame. A curvy pair of hips and legs that were the very definition of “foal bearing hips”, and her new mane flowed like a stream of golden wheat. All of this was topped with a calm and warm smile across her round face.

She didn’t appear to be as timid as Crimson was, nor as cocky as Maverick was, but it was clear there was some form of personality change. Nimbus’ seemed to giggle a little, seemingly to nothing. He had always been considered a bit of a cheerful stallion, with his head sometimes in the clouds. But now as a mare, she was more or less what one would call bubbly in personality, and a much more defined airhead. As well as this, even the doctor had to avert his eyes every so often to avoid directly staring at these massive tits.

Moonstone’s body was just as athletic and fit as it was before. He always had a bit of a softer looking face, so being turned into a mare was almost impossible to tell the difference. The body was a little thinner, the wings were more rounded and shorter, and her new mane was a little bit longer. But her chest was barely a cup size bigger than it had been before, a somewhat common thing among thestrals

Moonstone’s personality seemed more or less the same as well. He was a bit of a competitive thestral, often joking and engaging in feats of strength and speed. And this seemed to have remained on him. Her eyes gleamed with eagerness, as well as a somewhat giddy expectation. Whatever was going on in her head, the unicorn doctor couldn’t tell. Regardless, the two of them seemed to be all set, and both were quick to get to their new clothes.

“Alright, that’s it for the new mares. Now is up for the new stallions.” The doctor called out to the remaining four ponies. “Next!”

Walking in was Bubblegum, the once short and busty mare was now a somewhat taller but absolutely built and strong looking stallion. His new features were very impressive. As if he was a walking embodiment of physical might and strength. Looking over this new, sharper angled body, the doctor went through the typical physical examination. Though he did have a curious fascination with his new body, marveling at his impressive muscles, especially the long, low hanging cock between his legs.

“So, Bubblegum, how are you feeling?” The unicorn doctor asked, though was trying to not roll his eyes too hard. “Leave nothing out if you can help it.”

“I feel great doc!” Bubblegum replied, his once light and sweet voice was gruffer and deeper. But he showed no worries or even notice of this change. “I can’t believe I never knew how good it felt to be a guy!” Bubblegum’s personality was always a calm and composed one, but that seemed to have changed when the gender change occurred. Now, more than once the unicorn doctor had to gesture to the stallion to stop rubbing his new cock and balls. The leathery sheath loosened as this “mare-breaker” of a size was swelling out of it. “I mean look at this! This is amazing! I can’t wait to use it!”

“Yes, the rush of testosterone can be quite an experience.” The doctor commented, still trying to hold back his heavy sighs. “Just try to keep things in moderation. And not to-” Looking back at Bubblegum, he saw the stallion was starting to jerk himself off. Rolling his eyes, the doctor finished up his examination before sending Bubblegum to receive his new clothes. “Nevermind…next!”

Azure’s new stallion body was a little thicker than his previous mare form, but was still overall slender in shape. As petite as she was before, and more or less looking like a body of toned muscles. A shorter mane and sharper looking features and eyes, as well as a thin layer of facial hair had grown along the upper lip and chin. But what was the most striking about him, was his eyes, which seemed to glow with a stoic determination.

Azure had always been a “by the books” guard, focusing on her duty the Equestria, Canterlot, and to the Princesses. So it was not much of a surprise to the doctor that this same serious expression remained on his new face. Azure didn’t seem too phased by this change. If anything, he seemed to be focusing in the direction that the doctor had sent the others to get their new clothes. Whatever he was thinking, it had a goal in mind, and this new gender change seemed to be part of this plan.

Ty’s body was even more athletic than it was before, almost rivaling Bubblegum’s new form. He was still holding his smug confidence across his face, flexing and stretching a little. Despite the unicorn doctor trying to give a proper examination, this newly testosterone fueled pegasus was ready for anything. Every so often, he would spread his larger, longer, and sharper wings for emphasis, as if he was savoring the sight of his new, mighty wings. Rolling his eyes, the doctor finished up his medical check and sent Ty to pick up his new clothes.

Midnight’s body was a little closer to what she had before. She had a modestly small chest and wide hips. More often than not, they were the source of jokes among her fellow thestrals about her ass swaying so much it made clapping sounds. All in good fun, at least that was how they said it, but she never really enjoyed those comments. But now as a stallion, he was fully rounder. Chubby would be one possible term, and yet he didn’t feel a single ounce of worry, shame, or insecurity. If anything, he felt a little hungry, occasionally rubbing his belly as the doctor looked him over.

Midnight’s personality was still a little shy, but this appeared to be more of the external view and not the internal thoughts. His mind was filled with things he could finally do that he was so concerned she would be judged for as a mare. A sense of liberation was filling her mind. Content, the unicorn doctor gestured to this stallion thestral to get his new clothes. And now alone, he let out a small sigh.

“Alright, that should be that.” The doctor said, only to pause for a moment as a new figure approached him. Looking up, he saw Princess Luna. “Ah, Princess Luna. I have what you wanted.”

“Very good, doctor.” Luna replied, taking the papers the unicorn had been writing on. Flipping through the pages, the princess glanced over the physical and some psychological notes. “Did you notice anything else?”

“Only that the mares had adapted to being stallions far faster than the stallions have at becoming mare.” The doctor explained. “Not that some of the new mares didn’t adjust to their new form. It is clear some are taking it better than others, but the mares now stallions all seemed very content in their new bodies.”

“Very interesting. Thank you doctor.” Luna smiled, bowing her head as she turned to leave him. With the papers in her hand, she walked with confidence to return to Celestia. Her mind filled with her many plots and plans. ‘Now for the final step.’