The darkness lasted for a short while as Eden twisted and manipulated the costume head into place.  As it slowly worked it's way down into position, Theo could feel his long golden blonde hair being twisted and pulled through gaps in the pony head.  As it lowered further,  Theo could feel something pushing past his lips, into his mouth.  At first he kept his jaw clamped firmly, his token resistance, but as Eden pushed the head down into place, it put more and more pressure on his teeth.  Theo realized that, as Eden pushed, it was getting stronger and stronger.  He didn't think she even realized what was happening.  Could it become forceful enough that it broke a tooth?  Picturing himself spitting out teeth rapidly removed his token resistance.  Theo quickly opened opened his mouth, only to feel some foreign invader smoothly slid into place, holding his mouth open.  Theo had been gagged before, but this was very different from the balloon that had been in his mouth when he'd been the Teddy Bear.  With his tongue, he could trace the object that was now sticking well into his mouth and holding it slightly open.  It felt solid, but covered with something soft and rubbery.  As he probed, he could feel a few spots that the rubber didn't cover and they felt... metallic?  Then, with a sharp push, everything snapped into place.  The mask had descended to below his eyes, the darkness ended and Theo could again perceive his surroundings.

For Theo, other than the gag, it felt like he was again in the teddy bear costume he had worn previously.  His face was covered with a half mask just like it had been with the teddy bear except the pony snout extended much further.  He experimented, moving the head around.  One aspect that was interesting is that there was a hook behind his head, hidden inside the costume, that pulled his head back.  Theo could lower his head forward to look at the ground, like a pony, but he had to apply force with his neck and really push.  If he just relaxed, the pony head would pull up and into a neutral position and would support Theo's head so he could see forward comfortably.  This made it so keeping his head up, which would normally be a strain down on his knees and elbows, effortless.  From an external view, it meant that the suit forced Theo to look and move his head around like a real pony would.  Aunt Nancy's brilliant engineering and design had struck again.

What Theo could barely see, but could clearly hear and feel, was Eden struggling to fit the bridle over the pony head.  The bridle had bells fitted along it's length, making a delicate tinkle noise with every move.  Theo realized that soon he would be making that noise with his every movement.  Eden was struggling not because it was poorly designed, but because it needed to hook into the side of the mask with some very precise measurements, mimicking a bit and bridle on the pony head.  With some effort, Eden finally clicked it into place.  What Theo couldn't see was Eden connecting the collar around the pony neck, a collar that mated the head with the body and made it all one piece.  Eden had to struggle a bit and put some force into it, but eventually she was able to click the heart shaped lock into place.  The collar completely covered the seam where the head mated with the body.  With the collar in place, none of the costume could be removed.  With that lock in place on the collar, none of the costume could be removed without the key.  It was now effectively all one sealed piece.  Eden thoughtfully traced a circle around the small keyhole with her finger, absentmindedly reaching up to feel the key that hung from the necklace around her neck.  Smiling, she turned her attention back towards the collar and the concealed speaker in the front of the collar.  She flicked the power switch to the 'ON' position, thinking that she'd have to test it before they got to the convention.  In the meantime, she took Theo's hair that had been loosely threaded through the back and top of the pony head, and pulled it all through making sure it was completely snug.  She was sure it was painful for Theo to have his hair all being pulled, but Eden felt like a bit of discomfort for Theo might help emphasize the anti-bullying message she had delivered earlier.  As a result, perhaps she was a bit more energetic with her tugging than was needed as Theo could only wince at each pull.  With some scissors and a picture of Prissy Venus stuck in her pony form, Eden began to trim slightly Theo's blonde extensions to make it match.  Once that was done, out came the hair implements, curlers and a great deal of hairspray in order to duplicate the luscious volume of Prissy Venus's hair and mane.  Careful to make sure the pony ears were still clearly visible through the hair, Eden tied off the mass of curls with a tremendous pink bow, making it look like the pony had a very feminine hairstyle, with a long, curly pony mane down the back of the neck.  Delighted with the results, Eden made sure to knot the bow so there was no way it could come loose.  She tied a similar bow onto the pony's tail, tying it tightly but being very careful not to pull on it.  That was another part of the suit she'd need to test later.

During all this time, Theo had no idea what was going on, other than Eden kept pulling on his hair.  He winced several times in response, but since she couldn't see his face or hear a noise, he knew it wasn't going to be noticed by Eden.  He could feel her doing all sorts of work with his hair, but had no idea what.  With his arms and legs fixed in place by the harness, the only things he really had to do were to stare at the wall and to run his tongue all over the rubber bit in his mouth.  Much like the bit on a pony, it was pulled back enough into his mouth that he couldn't spit it out.  But unlike a pony bit, it was big enough to effectively gag him, making it difficult for him to make any noise.  Theo's tongue kept going back to the little spots of metal that he could feel on the bit.  What were those?  Those thoughts left as Theo was distracted by Eden again kneeled in front of him.  With a resigned sigh, Theo noticed Eden was equipped with a make-up kit and an assortment of brushes.  Any thoughts of resistance driven from his mind, he meekly obeyed as Eden began applying pigments to his face.  He obeyed her commands to 'look up' and 'close your eyes' and soon he felt the make-up on his skin.  He offered no resistance because he knew the make-up was going on anyway and all he'd get for his trouble is a poke in the eye or maybe worse.  Foundation, eye shadow, eye liner, mascara and blush were soon applied to the part of his face that was visible through the pony half-mask.  And Theo knew from the squeals, glee, giggles and exclamations of 'SO CUTE!' coming out of Eden that he'd be completely debased if he could look at himself now.

Finally, Eden stood, hands on hips, with a sense of accomplishment.  In front of her was the pony known as Prissy Venus as if she'd stepped right out of the show.  From the golden masses of spilling blonde mane and tail hair, held in place with enormous oversize sparkly pink bows, that could only come from the world of animation.  From the sparkly pink bridle, saddle and harness, all laced with delicate little jingly bells over the perfect baby pink fuzzy pony bodysuit.  From the sparkly little heart 'Venus' brand that looked to be branded on the pony's rump and finally down to the darling sparkly pink ballet slippers, with attached ribbons tied up the little pony legs.  In front of Eden was the most prissy little darling pink pony designed to be so cute as to make any little girl scream with glee.  But what made Eden squeal with glee, was knowing that inside this little girl dream was trapped the mean, vicious bully Theo.  Oh, if anyone asked, she'd say this was all part of a plan to turn him away from being a bully.  And it was, in a way.  Eden was doing this for Theo's mother, who couldn't handle the delinquent.  She was doing this for Theo's Aunt Nancy, who'd had her workshop trashed by this vandal.  She was doing it for her sister and her friends who had to put up with this terrible monster who spread rumors and lies that caused strife.  It was all a noble plan to turn that around.  And that's what she'd say.  But deep down, where she'd never admit it, Eden was fueled by revenge.  Revenge for her precious doll, her family heirloom passed down from generation to generation that Theo had crushed.  The reality was far more personal.  But Eden was rapidly discovering, as she followed through with her plan, that even deeper down than her revenge, having complete and total control over Theo was affecting her in ways she hadn't anticipated.  She'd experienced power as a dominatrix but this... This was different.  This wasn't just 'pretend' for a set period of time.  This was total and complete domination at her discretion.  The effects were as strong and addictive as any drug.  It was starting to affect Eden's judgement.  Looking at her captive little pony, she reached for the last thing that needed to be added, the belled reins that would attached to his bit and bridle.

  "Look what else you get to wear", she spoke to Theo jovially.  Shaking the reins in front of Theo, making their delicate jingle noise, she gleefully asked "Who wants to go walkies!" and thrilled at how big Theo's eyes got.  She clipped the reins to the bit in his mouth.  Then she knelt beside Theo.  "Now, if anyone holds these reins, you're going to want to listen to them.  And here's why" she said, giving the reins a slight tug.  Suddenly, the little spots of metal on the bit made sense as they poked out, jabbing into the inside of Theo's mouth!  Several jabbed into the roof of Theo's mouth quite painfully!  Theo shouted in pain, yelling for all he was worth!

  "Mmmm", was all that Eden could hear, and only because it was quiet, she was very close and listening.  The muzzle of the mask and the gag made it almost impossible for Theo to make an audible noise.  Theo rocked around in agony inside the suit, but the harness kept him fast.  Without being able to see what was happening, his only feedback from feel, Theo was certain his mouth was being slashed apart by razor blades or barbed wire!  He couldn't believe Eden looked amused while his mouth was torn to shreds! 

While Eden might seem callous, her amusement was at least partially because she knew it wasn't actually doing any damage to Theo.  What Theo didn't know is that the metal bits that were pricking the inside of his mouth would not do any lasting harm.  Oh, they might create a little sore spot, at worst draw a drop of blood, but that would heal in less than a day.  No, it was because they were poking into very delicate parts of his mouth as designed, the feelings of pain were enormously magnified and far, far worse than the actual damage inflicted.  This was a favorite tool of torment for Eden.  Originally designed to control the mightiest beasts of the animal kingdom before it was abandoned as too cruel for animals, only slight changes were needed to adapt it for a human mouth.  And that insured that anyone who wore this bit would have to pay close attention to whoever was holding the reins.  Not surprisingly, that's how Eden liked it.  As for Theo... He knew he'd do anything to avoid that sensation of pain in future. 

  "OK, you stay right there, 'Prissy'.  I need to go get my Pony Master costume on!" Eden mocked Theo, knowing full well that the locked harness meant Theo couldn't move anywhere.  But she ran off to get herself dressed for the convention.

Time seemed to stand still for Theo.  He could move his head around and spent some time turning his head quickly, then slowly, about and feeling the mass of hair behind him shift and move around.  But he soon bored of that.  Theo tried to move, tried to stretch his arms and legs, but the pony suit had the same harness that had been in the bear suit, and Theo was locked in place until someone unlocked it.  Theo was able to rock back and forth slightly, but that was about it.  Now tired and bored, he looked around the nondescript room.  It had some cushions on the floor and there were blankets, pillows and stuffed animals strewn about, obviously left-overs from last nights adult baby party.  The random cute little dress and ruffled underwear he could see soon had him thinking about some of the beautiful ladies he'd seen... Which soon had his naughty bits beginning to swell in their very tight protective cup.  Oww!  That was a whole other problem, but Theo had faced it before.  He had to think unsexy thoughts, so he focused on the revenge he was going to take on Eden when he got free.  Theo had to admit, he was a bit afraid of the dominatrix, but he wasn't afraid of her sister Emily, and Theo knew how he could make Emily's life a living hell.  She was a quiet, shy girl, and Theo knew exactly how to become the stuff of her nightmares.  She would become the focus of his vengeance.  Anything she liked, anything she cared for, Theo would destroy it.  He began to make a mental list.  Looking at the cute, pink pony, no one would ever guess such vile thoughts could seethe beneath such a darling exterior.

Meanwhile, as Theo plotted, Eden started dressing up in her Pony Master outfit.  Her outfit was gender bent, 'Rule 63 cosplay' as they called it at conventions.  She'd be the Pony Mistress instead.  In the cartoon, the Pony Master was essentially dressed as a stereotypical cowboy, but all in black with silver accessories.  Wearing a black vest over a button up black cowboy shirt with silver buttons, wearing black pants with black chaps held up by a black leather belt with silver studs.  Black cowboy boots and a black cowboy hat completed the look on the show.  Eden's version of the outfit introduced a bit more dominatrix style.  It still had the identical black hat.  But the vest and shirt were replaced with a silver buckled vest corset with a black collar that went flared up behind her neck to look properly intimidating, yet displayed all her curves to best effect.  Some perfectly placed concealed padding brought her chest up and out, giving her cleavage for days.  The pants and chaps were replaced by leather shorts to be just that little bit sexy, and Eden's thigh high black leather boots with a stiletto heel.  Add to that some shoulder length black gloves and some criss-crossed leather belts at her waist, one holding her whip and the other holding her lasso, and Eden looked every part the fearsome, intimidating Pony Master, but in female form.

Looking at herself in the mirror, Eden knew she'd have every nerdy boy, and some nerdy girls, at the convention staring at her, drooling over her... Completely jealous.  Eden was the kind of woman who gloried in having that power over people.  But thinking about that soon had her thinking about the power she had over Theo.  As a dominatrix, she usually worked with people who sought out her services.  As such, most of them were eager and happy to do whatever she said... But for a limited time.  Having control of Theo was different.  She felt a certain warmth spreading through her body... Particularly her naughty regions.  Knowing that he was unwilling, knowing that she was getting her revenge for what he'd done to his Aunt Nancy and to her sister Emily, filled Eden with something stronger than she'd ever felt before.  She didn't want to let go.  She started to wonder if maybe sending Theo to school on Monday could be avoided.  Maybe she could call in and tell his teachers he was sick?  No, that would at best be a temporary way to keep him under her control.  After too many sick days, the school would at least investigate.  But then she got an idea... The success of the harness invented by Theo's aunt Nancy was generating investors.  What if Eden secretly spent some of her family money to create a company that would fund Nancy?  What if she convinced Nancy that she had to move to work with the new company?  Nancy was always saying what a handful Theo was, surely if Eden offered to look after him while Nancy moved to a new city and dealt with all this new responsibility, she'd accept.  Eden could tell Nancy how, given more time, she might be able to turn Theo into a more caring, compassionate young man.  That could be her cover story.  Really, she felt all tingly at the idea of having Theo completely under her control for weeks, even months and all the ways she could humiliate him.  She ran her gloved hands all over her body, reveling in the feeling the outfit gave her and the future possibilities of giving her fantasies free rein with Theo as her unwilling subject.

And as Theo and Eden both made their plans for each other, it was hard to know who to feel sorry for...

Eden started hearing noises and realized the girls were out and about.  That implied they were dressed and ready to get going to the convention.  Eden quickly gave herself another once over in the mirror to make sure everything was in place and headed out of the dressing room to meet the girls.  As she returned to the room she'd left Theo in, her jovial bliss abruptly disappeared as she saw what the girls were up to.  What they were doing with Theo... No, no, NO!  The one thing that Eden could absolutely not stand!  And for a moment the fury that she felt for Theo was directed at the girls instead.  Eden shouted at the girls immediately!

  "STOP THAT!  STOP THAT RIGHT NOW!"