The Multi-fusion

by DylanZBass

Rating: mature
Tags: My Little Pony: Friendship is Magic, Romance, Princess Cadance, Comedy, Starlight Glimmer, Shining Armor, Sunburst, Sex, Thorax, Anthro
Length: 7225

Sunburst fuses with Thorax, then Starlight, then both at the same time.

A day after Silent Learner defuses back into Fluttershy and Twilight, Thorax arrives at Sunburst's house. The reason is that Sunburst wanted to study the fusion spell even more, by fusing himself with a member of another species, specifically Thorax. After they defuse, Sunburst fuses with a member of the opposite gender, Starlight. Then he fuses with all three.

Published 2017-05-22 23:50:01 UTC
Last updated 2017-09-25 20:27:43 UTC

Shining Sensor: Part 1

Sunburst paced nervously around his room. He was expecting the arrival of Thorax, the current Changeling king, and friend. The reason for Thorax's visit was a spell. A fusion spell. Sunburst had asked Princess Twilight if he could study the fusion spell even further by fusing with a member of another species, and member of the opposite gender, both of who he had already chosen, and was hoping that they were ok with fusing with him. But first was Thorax, for the other species fusion? Sunburst glanced at the door again, and coincidentally, when he looked away, knocking sounded. He grinned.

Thorax is here! he thought with a mix of nervousness and glee. He opened the door to instead see Starlight. He had had a crush on Starlight as a child, and still had one on her today.

"Hi Sunburst!" she exclaimed. She entered the door and hugged Sunburst, pressing her E cup breasts into his chest, making Sunburst blush lightly. She was wearing a purple shirt, and blue shorts.

"Hi, Starlight," Sunburst said as he hugged her back. "I wasn't expecting you to be here today! Not that seeing you now is a bad thing." Starlight pulled out of the hug.

"I know," she said. "But I finished all my friendship lessons earlier than expected, so I came early!" She frowned. "There's nothing wrong with that, is there?" Sunburst shook his head.

"No, no, it's fine," he said. "It's just that Thorax was going to arrive today to help me with a spell."

"Oh," he heard a voice say. "So that's what I'm helping you do?" He looked out the door, which he then relished he had forgotten to close, and saw Thorax. Thorax was wearing (surprisingly) a suit with a tie. Said suit was a sandy brown, which he looked very good in, which, again, was surprising, since was multicolored.

"Oh, hi!" Sunburst said."Good, you're here!" As Thorax entered, Sunburst moved to close the door.

"What spell is it?" Starlight asked.

"Uh, ok," Sunburst said as he moved back to his original position. "Well, you know how Twilight had recently fused with her friend, Fluttershy, right?" Starlight nodded.

"Of course," she said. "I mean, I wasn't there because I was helping Applejack, but yeah, I know."

"No," Thorax said. "Twilight fused with Fluttershy?" Sunburst nodded.

"Yes, and it was very intresting, to say the least," he said. "Which is why I invited the both of you here. I was going to study the effects and whatnot of fusing with a member of a different species, and the opposite gender, and then both at the same time. Plus I kinda wanted to see what it would be like, but I was going to fuse with Thorax first, mainly because I didn't know you were going to be done with your friendship lessons this soon. Not that that's a bad thing, but I wasn't ready for you yet."

And I need to figure out how to hide my crush on you, he mentally added.

"A fusion spell?" Thorax asked. "Intresting. How does it work?"

"Well, it takes two ponies, maybe three, that's what we're going to find out soon, and makes them into one pony. It combines the physical and mental attributes of both ponies, and combines them," Sunburst said. "You're still sure that you want to do this Thorax?" Thorax nodded.

"This spell seems exciting," he said. "Let's do it!" Sunburst smiled.

"Wait, so all three of us are going to fuse together?" Starlight asked. Sunburst nodded.

"Yes, but not now," he said. "But first I'm fusing with Thorax, then you, then both of you." Starlight nodded.

"Ok, now I get it," she said. "This could do some good for a friendship lesson!" Sunburst nodded.

"Ok, that's not originally thought of it like, but that works," he said.

"Good," he said. "Now, this is the awkward part. Starlight, you're going to have to go into another room, because we need to be naked. Which is why I was expecting Thorax first." Starlight lightly blushed, as did Thorax.

"Really? That's why Thorax was supposed to be here first? I'm sorry," she said. "So when we fuse in a couple of days, we're going to have to be naked?" Sunburst nodded.

"I'm sorry, but yes. And you don't need to be sorry," he said. "Now, Thorax, you're sure you want to do this?" Thorax nodded.

"Yes, I am sure," he said. "Let's do this!" Sunburst smiled nervously and nodded.

"Ok then," he said. "Starlight, can you go into the kitchen?" Starlight nodded.

"I won't come in until you have some clothes on," she said as she entered the kitchen. Sunburst faced Thorax.

"Ok, what happens after we take out clothes off is between us and only us, ok?" Sunburst said. Thorax nodded.

"I know," he said. "You have my word." Sunburst nodded as he started taking his shirt off. About a minute later, both were naked. Sunburst started charging the spell.

"This won't hurt, will it?" Thorax asked suddenly.

"I don't think so," Sunburst said. "The spells almost ready, so prepare yourself!" He had barely finished saying that when an orange glow surrounded Thorax and himself. Thorax was lifted into the air and brought close to Sunburst. The last thing Sunburst thought was: "It kinda tickles."

Shining Sensor: Part 2

Starlight had her ear to the door, listening for movement. She had heard (kinda) Sunburst and Thorax fuse, but there had been no movement since then. She was considering going in to check if they were ok, despite saying that she wouldn't until they were dressed when she (finally) heard something. On the other side, the newly fused Sunburst and Thorax groaned. He opened his eyes and raised his head. He started to get up, until he saw his skin. He gasped. His skin was shiny, and his arms were an olive brown color. His chest, which had a slight six pack, was a brownish color, and his wings were an intresting shade of very light red. He stood up and glanced at the mirror. His face was the same color as his arms and legs, and he had Thorax's orange horns. He also had Sunburst's orange unicorn horn in the middle of the moose like horns, and his eyes were a dark blue. He tapped his skin, to find that it was kind of hard, like the changlings shells, but soft and fuzzy, because of the pony fur, which was intresting. Finally, he looked down at his crotch. He whistled in amazement. Despite being flaccid, it had to be about 6 or 7 inches.

"Um, hello?" he heard Starlight call from the kitchen. "Are you alright?"

"Yeah, I'm ok," he said. His voice was still rather nerdy sounding, but it was still nice, a mixture of Thorax's and Sunburst's. He looked at the pile of clothes on the ground. "Hang on a second, let me get some pants on." He picked up Sunburst's pants and started pulling them on, to then find out that they were a bit tight. His legs were a bit bigger then Sunburst's, and a bit athletic and stronge. But he managed to get them on anyway.

"Are you doing alright?" Starlight asked.

"Yeah," he said, walking towards the door and opening it. Starlight took one look at him and started blushing.

"You have abs," she said. "Why don't you have a shirt on?" He shrugged.

"The pants are already kinda tight," he said. "I don't really want to risk the shirt. Sunburst likes that shirt."

It's not the only thing that Sunburst likes, he mentally added.

"Ok," Starlight said. "But before we go any further, or anywhere, what do I call you?"

"I haven't really thought of that, actually," he said. He thought for a couple of seconds. Then he snapped his fingers and said "I've got it! Shining Sensor!"

"Shining Sensor?" Starlight asked. "That's a cool name, but why that?"

"Because I'm kinda shiny and can sense certain emotions," Shining Sensor said. A look of horror flashed across Starlight's face for a second.

"You can still sense love?" she asked.

"Eh, kinda," Shining Sensor said. "I can definitely sense some love, but I'm not quite sure where it's coming from, and who it's directed at."

Ok, good, Starlight thought.

"Now, I'm going to need some clothes," Shining Sensor said. "Can I borrow one of your shirts? Those are kinda big." Starlight blushed and lightly punched Shining Sensor's arm.

"I know my chest is big," Starlight said. "You can wear one of my shirts now, but don't tease me." Shining Sensor lightly blushed.

"I'm sorry," he said. "I didn't mean to tease you. I actually forgot you didn't really like comments on it."

"Ok, so there are some side effects for fusing," Starlight said. "Now, I'll get one of my shirts for you, and we can go get some clothes for you."

"Oh, we should probably send a note to Shining Armor and Princess Cadence," Shining Sensor said. "They know that Sunburst was going to study the fusion and they wanted to see me after the fusion to see what I had found out and whatnot."

"That's pretty cool, actually," Starlight said. "You must have a lot of benefits since you're their Crystalier." Shining Sensor shrugged.

"We can talk on the way to the store, ok?" he said. "Now, can you go get a shirt?"

Shining Sensor: Part 3

About an hour later of shopping for clothes, Shining Sensor and Starlight were standing in the Crystal Castle. A guard had been sent to get Shining Armor and Princess Cadence. Fortunately, the guard knew that Sunburst was going to be using the fusion spell multiple times in the following days, possible weeks.

"So, what exactly are the plans for these fusions?" Starlight asked. Shining Sensor shrugged.

"Honestly, it was mostly just to see if they were possible above anything else," he said. "Sunburst had good reason to suspect that the fusion spell might not work on members of different species."

"That makes sense, I guess," Starlight said. "But what about my fusion?"

"I'm probably going to see what physical attributes that fusion brings," Shining Sensor said. "Mostly what set of....genitalia that fusion gets." Shining Sensor was blushing as he finished that sentence. Of course that also made Starlight blush as well. That was also when Shining Armor and Princess Cadence happened to walk in.

"Sunburst?" Shining Armor gasped. Shining Sensor and Starlight looked at them, slightly nervously. "Dude....you look awesome!" Shining Armor was grinning and Princess Cadence was just smiling..but at Starlight.

"Thanks!" Shining Sensor said with a small bow. "But while in this fused state, I'm going under the name of Shining Sensor." Shining Armor grinned.

"Really? That's cool," he said. "Now, do you mind telling us a bit about this fusion?" Shining Sensor nodded.

"Yeah. Physically, I've got Thorax's wings and horns, and Sunburst's magic horn," he said. "I've also got abs and my legs are more athletic than either Thirax or Sunburst, and my colors are a combination of both. Plus my skin is a strange thing. It is both hard, yet fuzzy."

"That's cool, but what about abilities?" Princess Cadence asked with a grin. "Like, are you still able to cast magic, and can you sense love?"

"Kinda," Shining Sensor said. "I can sense it, but I can't tell where it's coming from, and who it's going to." Cadence's grin widened.

"That's cool," she said. "So you can tell that Flurry Heart is in the castle, but not specifically where?"

"Yeah, somewhere on the fourth floor," Shining Sensor said. "No, sorry, now she's on the third floor." Shining Armor's smile vanished.

"No! Seriously?" he cried.

"No," Shining Sensor said. "Now she's back on the fourth floor."

"You should probably go check on her, honey," Cadence said. As Shining Armor ran upstairs, she turned back to Shining Sensor. "Now, I know this going to be a little awkward and sudden, but how long is your penis?" Shining Sensor blushed, along with Starlight.

"Do I have to answer that," he asked. "I haven't actually measured it yet."

"But if you had to guess?" Cadence asked, giggling at the obvious embarrassment Shining Sensor was feeling.

"Again, do I have to answer that?" Shining Sensor asked. "Because I'd really rather not do that, especially with Starlight here." Cadence snickered.

"Don't worry!" she said. "I was just kidding! Mostly. You don't have to answere that question if you don't want to, although I doubt that I'm the only who's wondered that." Starlight started blushing harder.

"Nothing," she said.

"Anyway, what are your plans for the rest of today?" Cadence asked. "You are coming over for dinner tonight, right?" Shining Sensor looked confused.

"Why dinner?" he asked.

"Technically, you're still a foreign ambassador, and a friend," Cadence said. "Did Thorax forget about that?"

"I'm sorry," Shining Sensor said. "That's an intresting apparent side effect. I've forgotten about some things from both Thorax's and Sunburst's lives."

"Really?" Cadence asked. "What did you forget?" Starlight snickered as Shining Sensor looked genuinely confused.

"I...just said that I forgot them," he said. "I don't know what I forgot." Cadence laughed.

"I was joking about that," she said. "But that is intresting. So come over for dinner, and we can talk more. Oh, Starlight, you should come too!" Starlight's eyes widened.

"Me?" she gasped. "Why me?"

"Because Starlight has talked quite a bit about you," Cadence said. "Besides, you're friends of both Starlight's and Thorax's, so why not?"

"Well, ok!" Starlight said, amazed by this. "Wait, Sunburst talked about me?" Cadence was about to say something when Shining Sensor started talking.

"Ok, well, if that's tonight, we should probably get some appropriate clothing for it," he said.

About an hour later, the clothes shopping was done. It was hard to find some formal wear that would actually look good on Shining Sensor. But finally, they did find one. A nice brown suit, and a black dress for Starlight.

"Don't worry, you look fine," Shining Sensor said as Starlight tugged on her dress again.

"Yeah, but this is dinner with royals!" Starlight said.

"And I am royal!" Shining Sensor said. "Remember, I'm now half Thorax, not all Sunburst. Besides, don't you live with Twilight? Another royal?"

"That's a good point," Starlight said. A guard appeared to guid them to the kitchen. A few minutes later, they were there. There was already a bunch of food laid out on the table, and Cadence and Shining Armor where already sitting.

"Hello!" Shining Sensor said as he pulled a chair out for Starlight. "So, what where you wanting to talk to Thorax about?"

"Well, there were a few things," Cadence said. "But mostly it was about a partnership between changlings and ponies. And maybe learning a bit more about Changling biology." Shining Sensor nodded.

"Ok," he said. "I could probably get a couple of volunteers for you to, uh, study. And how does this partnership work?"

The next half hour was mostly just politics, which bored Starlight. She kept looking at Shining Sensor.

I hope he doesn't remember my crush on him, she thought. She wasn't paying attention when Cadence said her name. Finally, Shining Sensor tapped her shoulder. He was blushing quite hard.

"Where you listening to that last part?" he asked.

"I'm sorry, " Starlight said. "Not really."

"Well, um, Cadence wants us to, um," Shining Sensor started.

"I want you two to have sex," Cadence said. Starlight turned scarlet.

"What?" she asked. She had never gotten an order or request like that before!

"Well, we were talking about how Shining Sensor was in between Changling and pony biology, and what exactly that would mean, specifically for sex," Shining Armor said. "You don't have to have sex with him, but that would be nice." Starlight's mouth was wide open, her eyes flirting from Cadence to Shining Armor to Shining Sensor's scarlet face.

"This...is...very sudden," Starlight said. "Um...if I do accept it, this doesn't have to be here, does it?"

"Only if you want it to," Shining Armor said. She glanced at Shining Sensor.

"And you're ok with this?" she asked.

"Only if you are," Shining Sensor said. "You don't have to, because I can still, um, masterbait."

"Yeah, not yet," Starlight said. "After you defuse into Thorax and Sunburst. Sorry, I'd just prefer it being between me and Sunburst."

Well, either way, do measure your penis," Cadence said. "Just examine it, period." Shining Sensor blushed lightly as he nodded.

"Ok, I'll get to doing that once we get home," he said.

"Actually, we have some really great science equipment here," Shining Armor said. "If you want to stay here and do the....stuff, please, do."

"Sure, I guess, thanks," Shining Sensor said. "But all that I need to do is measure it, then masterbait."

Author's Note

This feels a little rushed to me, and I'm probably going to edit this in the future.

Shining Sensor: Part 4

Shining Sensor walked into the room that Shining Armor had given him, and picked up a tape measure. He pulled down his pants. He extended the tape measure and put it against his penis.

Ok, eight inches flaccid, he thought. He glanced at a Playpony magazine that somepony had put in the room. Time to study the more sexual part.

About 30 minutes later, Shining Sensor exited the room, with a satisfied grin on his face. Shining Armor and Cadence were sitting outside of the room, waiting and talking.

"I'm done with the...stuff," Shining Sensor said. "Um, there is a small beaker of my seamen in there if you want that to be studied." He was blushing lightly.

"Cool," Shining Armor said. "What are you going to do now?" Shining Sensor shrugged.

"I'm probably going to defuse into Sunburst and Thorax," he said. "And then Sunburst will probably fuse with Starlight after an hour or two."

"Why the wait?" Cadence asked.

"Well, I don't want to jump into it immediately because there could be some kind of negative side effect," Shining Sensor said.

"That makes sense," Shinning Armor said. Shining Sensor turned to leave, but Cadence cleared her throat.

"Have fusion sex," she said. "Tell us what it's like." Shining Sensor blushed and nodded.

When Shining Sensor arrived at Starlight's house, he opened the door and cried out "I'm home!" There was some rustling in the kitchen, and then he saw Starlight's head.

"Nice!" she said. "Are you going to defuse now?" Shining Sensor nodded.

"In about an hour, Sunburst will fuse with you," he said. "Uh, unless you want to do it later."

"I was kind of hoping we would do it sooner," Starlight said.

"Eh, we can talk about all that later," Shining Sensor said. "Now, can you please step outside of the room?" Starlight nodded and her head disappeared behind the doorway. Shining Sensor pulled his shirt off, with only minor difficulty from his horns. Then his pants and underwear came off. He started charging the spell, mental preparing himself for the separation. Then he casted the spell.

A minute later, Sunburst woke up. He sat up and saw that Thorax was already up as well. Thorax was staring at Sunburst.

"That was interesting," Thorax said. "So, what now?"

"Well, we should probably get dressed, but I'm probably going to fuse with Starlight in about an hour," Sunburst said. "Other than that, I'm not sure. Now, where are the clothes again?"

"I think there in the guest room," Thorax said. "I'll go get them."

When Thorax arrived a few minutes later with Sunburst's clothes (Thorax had already put his back on), Sunburst was talking to Starlight through the doorway.

"Is ten minutes good, then?" Sunburst was asking.

"Yes, that seems good," Starlight responded.

"I have your clothes," Thorax said, his head facing away from Sunburst. Sunburst turned around.

"Ok, thanks," he said. He grabbed his stuff and a minute later, he was dressed. He opened the door to let Starlight in.

"So what were you just talking about?" Thorax asked.

"When the next fusion is," Sunburst said. "Starlight wanted to do it now, but I convinced her to wait a little."

"Yeah, but until then, how was it?" Starlight asked.

"I remember everything that Shining Sensor experienced," Sunburst said. "It's like something out of a sci-fi story."

"Yeah, it was great!" Thorax said. "You'll like it!" Starlight grinned.

"Good, very good," she said. "Anything else I should know about Sunburst before we fuse?"

"His love for you is huge!" Thorax said.

"Hey!" Sunburst complained. "Why?"

"Because your reaction was funny," Starlight said. "Now, can we fuse?" Sunburst sighed.

"Sure. Thorax, can you exit please?" Sunburst asked. Thorax nodded and stood up.

"I'll see you later, then," he said. He turned around and entered the kitchen, closing the door behind him. Sunburst turned towards Starlight.

"So, uh, we will need to take our clothes off for this," Sunburst said. He gripped his shirt and started pulling it off. Starlight lightly blushed and started pulling her shirt off too. Half a minute later, all the clothes were lying on the ground. Sunburst was staring at Starlight.

She's beautiful, he thought.

"Are you ready?" Starlight asked. Sunburst shook his head and stopped staring.

"Yes, are you?" he asked. Starlight nodded.

"Cast it," she said. Sunburst nodded and started charging the spell. As it reached it's climax, Sunburst grinned. He was, after all, about to fuse with the most beautiful girl in Equestria. Then he casted it, and it drew them together.

Eclipse Seeker: Part 1

As the now fused form of Starlight and Sunburst woke up, he could feel the differences in his loins. The oddity if having the opposite set of genitalia, yet being used to having it. And there was the fact that he had hade both sets. He looked himself over a relised a few things. One, he had a deep reddish fur color. Two, he had Starlight's boobs and butt size still, and Sunburst's red beard. And then memories started coming in. Seeing their friendship from both sides was strange. And of course, all the problems that both Starlight and Sunburst had gone through.

I need a name, he thought.The obvious one would be Starburst of Sunlight, but those are too on the noes. Lets do....Eclipse Seeker.Then he heard Thorax knocking on the door.

"Are you alright in there?" he asked.

"Yes, I'm ok," Eclipse Seeker said. He sounded nerdy still, but also powerful. "Hang on a second, let me get dressed." He hooked Starlight's bra on and pulled Sunburst's underwear on, and decided to go with Starlight's shirt and Sunburst's pants, and opened the door. Thorax stared at Eclipse Seeker.

"Wow," he said. "This is interesting." Eclipse Seeker grinned and shook his chest.

"You like it?" he asked. Thorax blushed and groaned.

"You're so mature," he said sarcastically. Eclipse Seeker snickered.

"That would be the Starlight for you," he said. "But this really is an interesting fusion. I've already noticed several problems that I may be able to solve now."

"Well, that's good," Thorax said. "Maybe you could figure out a way to make the duration of the fusion longer?" Eclipse Seeker snapped her fingers.

"That's a good idea," he said. "I should focus on that. Sunburst wrote down a ton of notes about the spell, and I could study the way that the spell brings us together!" Thorax slowly nodded.

"Ok," he said. "That would be cool."

"Yeah it would," Eclipse Seeker said. "Who knows, maybe I could finally solve one of the unsolvable mat equations! Oh, and I'll also need to do....various other stuff."

"Ok," Thorax said. "Hey, do you think Princess Cadence and Prince Shining Armor want to see you, now that you've successfully fused members of the opposite genders?"

"Maybe later," Eclipse Seeker said. "Time to study!" He started to turn around, but Thorax had one last question.

"Actually, what, uh....what pronouns would you prefer? You know, since you're both genders?" he asked. Eclipse Seeker paused.

"That's a good question," he said. "But I'll go with male pronouns."

"Ok, thanks," Thorax said. Eclipse Seeker turned back around and headed upstairs to get Sunburst's notes on the fusion spell. He found the notes, but got distracted by memories of both Sunburst and Starlight. Specifically emotions. Both had strong crushes on the other. He glanced down at his loins.

Cadence did tell Sunburst to have fusion sex, he thought. And it would be rather informative. Besides, how many times do you have this kind of opportunity? His loins were starting to react in their different ways.

Meanwhile downstairs, Thorax was reading one of the books that Sunburst had left out. He had been reading since Eclipse Seeker had gone upstairs. He thought about how it had been, being a part of Sunburst, when he heard moaning and a screech from upstairs. He started running towards Sunburst's room, which was were it had come from, and tried to open the door, but it was locked.

"Eclipse Seeker, are you ok?" Thorax asked nervously. He heard panting from behind the door.

"Yeah, I'm fine," Eclipse Seeker said.

"What happened?" Thorax asked.

"I, uh, I did what Cadence had told me to," Eclipse Seeker said. "Or told Sunburst, really."

"What did she tell you to do?" Thorax asked.

"She told me to have fusion sex," Eclipse Seeker said.

"You had fusion sex?" Thorax asked tentatively. "So you just screwed yourself?"

"Pretty much," Eclipse Seeker said.

"Ok then," Thorax said. "Well, I'm going to go back down stairs now. Are you good to continue studying?"

"Yes," Eclipse Seeker said. "I'll be good. Unless you want to join in?"

"No, I'm good," Thorax said. "Although, maybe we can do that later?"

"Ok. I'm going to study now," Eclipse Seeker said. "Lets eat later, and then we can get frisky."

"Ok," Thorax said. "What do you want me to make?"

Eclipse Seeker: Part 2

Later that night, after Thorax had finished making dinner and they had eaten, Thorax asked Eclipse Seeker something he had been thinking for a little while.

"How did you do it?" he asked.

"Do what?" Eclipse Seeker asked.

"Have sex with yourself?" Thorax asked. "How did that work?" Eclipse Seeker lightly blushed.

"Well, I got an erection, but not too hard, and I had to angle Sunburst's shaft towards Starlight's vagina, and started inserting it," Eclipse Seeker said. "After that, it was simple. Just keep pumping. I've masterbaited as Sunburst and Starlight before, but I've never experienced an orgasm that intense." By the end, both Eclipse Seeker and Thorax were blushing.

"That must have been...interesting," Thorax said. Eclipse Seeker nodded. "So, did you figure out whatever it was you were trying to figure out?" Eclipse Seeker nodded.

"Yes. I think the fusion spell was never completed," he said.

"It was never finished?" Thorax asked.

"Yes," Eclipse Seeker said. "That or whoever made the spell didn't do it properly. Either way, it'll be exciting to make it right."

"Yeah it would," Thorax said. "Who knows, you might get some kind of title, or reward or something."

"Yeah, that could happen," Eclipse Seeker said. "But I don't really care for that."

"Let me guess, your more in it for the learning possibilities?" Thorax asked. Eclipse Seeker nodded.

"You bet," he said. "Of course, I better figure out other stuff while fused. Actually, do you mind if I go do that?" Thorax shook his head.

"Go do it," he said. "It could better Equestria." Eclipse Seeker grinned.

"You're right about that," he said. "It could. Surprisingly, for the next few days, Eclipse Seeker mostly stayed in his room, figuring out equations and problems that could help better Equestria. On the fourth day, they were eating dinner again, and Eclipse Seeker was talking about how he had figured out a spell that would help create more food, and specifically creating vegetation in a desert.

"It all had to do with the sun and water," he was saying.

"Nice," Thorax said. "This will be able to help the changling kingdom!"

"That's in part why I did it!" Eclipse Seeker said. "The only thing I haven't figured out yet is how to fix the fusion spell." Thorax nodded.

"And don't you defuse tomorrow?" he asked. Eclipse Seeker nodded.

"I have until tomorrow to solve it," he said. "Although, if I don't figure it out by then, the three way fusion might be able to solve it."

"That would be cool," Thorax said. "Oh, by the way, Cadence and Shining Armor are going to be here in a few minutes." Eclipse Seeker gasped.

"Why?" he asked.

"They wanted to see how this fusion was going, and they wanted to see all of your new theories and solved problems," Thorax said.

"I have to get dressed then!" Eclipse Seeker said. "How soon will they be here?" As she finished saying that, there was a knock on the door.

"Now," Thorax said, standing up and starting to walk towards the door. "And don't worry about dressing up, it's a casual meeting." He opened the door.

"Hello!" Cadence exclaimed as she walked in. She and Shining Armor stared at Eclipse Seeker as they walked in.

"So this is what you look like," Shining Armor said with a grin. "Nice."

"So, Thorax says you managed to figure out a ton problems that Equestria has?" Cadence asked. "And that you've named yourself Eclipse Seeker?" Eclipse Seeker nodded.

"Not only that, but several way's to help out the changling kingdom repair itself," he said.

"And all because of this spell," Shining Armor said. "Nice. Hey, maybe you could figure out something that will help the Royal Guards recruits train better?" Eclipse Seeker nodded.

"Sure, I'll still have both Sunburst's and Starlight's intelligence tomorrow when we do the three way fusion," Eclipse Seeker said.

"Speaking of which," Cadence said with a grin. "Did you ever have that fusion sex?" Eclipse Seeker blushed.

"Yes," he said. "I'd rather not tell you about it right now, so maybe I can come by tomorrow and tell you about it?" Cadence nodded.

"Sure," she said. "That sounds good."

"Thank you," Eclipse Seeker said. "Now, what else specifically did you want to know?"

"You have both sets of privates?" Shining Armor asked.

"Yes," Eclipse Seeker said. "I wouldn't be able to have sex with myself otherwise. Now, sit down. I can tell you more about the sp-." Suddenly Eclipse Seeker twitched, and realization dawned on his face. "It's happening." He twitched again and turned around, heading towards the living room. Just as he got to the door, he started to spasm and fell to the ground. Thorax knew that, for whatever reason, the fusion spell needed to be undone. Thorax ran towards Eclipse Seeker and was able to pull his shirt off before Eclipse Seeker teleported them off, and in another flash of light, he had defused back into Sunburst and Starlight. Cadence covered Shining Armor's eyes because of Sunburst and Starlight being naked, and Thorax started dragging them into the living room.

Author's Note

The ending was rather fast, I know. And there is a reason why they needed to defuse early. But I hopped you liked the chapter, and the next one will be released soon.

Intellectual Changer: Part 1

The next day, Sunburst woke up in his bed with the smell of pancakes downstairs. He remembered what had happened the night remembered and the days before that and grinned. He got dressed and went downstairs to see Thorax and Starlight talking.

"Hey," Sunburst said. "So, uh, what happened to Shining Armor and Cadence after Eclipse Seeker defused early?"

"They went on back to the castle after they were sure you two were alright," Thorax said. "Me and Starlight were actually talking about why that may have happened."

"Really?" Sunburst asked. "Nice. What do you have so far?"

"You may have overloaded the fusion matrix," Thorax said. "You see, the fact that Eclipse Seeker stayed inside and solved all of those problems may be a part of why it happened. You only did one thing for a long time. That and it might have also been due to the fact that you two are in love." Sunburst and Starlight blushed.

"Ok, but how does that add to overloading the matrix?" Sunburst asked.

"It's because when you fuse, those emotions and hormones get confused, in a sense," Thorax said. "They get confused because the person that they cause the attraction to are now a part of them. Having the fusion sex may have slowed down the process, however, I'm not sure. But you needed balance. I know that you two like more than just studying."

"How do you know all this?" Sunburst asked.

"It's because of a changling thing," Thorax said. "You need to find an interest that isn't transforming into other people and acting like them. You need a little bit of balance."

"Wow," Sunburst said. "Now, when are we going to do the three way fusion?"

"I'm good whenever you two are," Thorax said.

"I'm good with now," Starlight said.

"Then ok," Sunburst said. "I guess we could do it now, if both of you are sure." Thorax and Starlight nodded. "Well, you know the drill." As everyone started taking off their clothes, Sunburst started charging the spell. He turned around when he had taken his underwear off and noticed that Starlight and Thorax were ready. Sunburst casted the spell and drew then closer to him, and when they touched him, they all blacked out.

A few minutes later, the fused form of the previously three people woke up. As he started standing up, one of the first things he noticed was his color. His chest was a shade of dark pink, with a kind of yellow shade on his neck. He assumed that his horns were around the same shade. The crystals on his neck were still the same shade. He also noticed that he had Starlight's boobs. He glanced at his back and noticed that his wings were a deep orange color, and he felt his chin, feeling Sunburst's beard there. He summoned a mirror to see his face and head. His head and unicorn horn was the same color as the rest of his body, and his antlers were the same color as the spot on his neck. He had both sets of genitalia like Eclipse Seeker, but his penis was the same length as it was while as Shining Sensor.

Interesting , he thought. He looked back at the finished pancakes and grabbed one. What do I need to do? The first thing he thought of was to try and finish fixing the fusion spell, but Eclipse Seeker had ended early because if that.

I do need balance, he thought. Then he lightly gasped as he remembered the chalkboard in Sunburst's room. Balance! That's it! The spells magic wasn't balanced! He ran upstairs, entered Sunburst's room, picked up a piece of chalk, and started editing the fusion spell. As he edited the spell, he relised just how extensive the spell was, and how smart you had to be. After a few minutes of crunching numbers and editing the spell, it was done. He grinned and exclaimed "Yes!"

I'll need to defuse and apply this fusion spell to see if it works or not, he thought. So he started charging up the spell to defuse him back into three, and casted it, blacking out. A few minutes later, Sunburst woke up again. He shook Starlight and Thorax awake.

"Come on, lets do this!" Sunburst said excitedly. Starlight yawned and stood up. Thorax stood up and grinned.

"It was all due to balance!" he said. "I helped! Yes!" Sunburst grinned again and started charging the new spell. It brought them together and they blacked out. A minute later, the fused form woke up again. He still looked the same, but he didn't feel any different.

I need a name, he thought. This is going to be though. Lets see. He thought for a few minutes before snapping his fingers and exclaiming "Intellectual Changer!" He grinned as he let it sink in.

Now, time to do something else until the supposed pain, he thought. I'm going to make a kite or two, but what else?

Author's Note

And here's the final fusion form for this story! I hope you like it!

Intellectual Changer: Part 2

Intellectual Changer kept himself entertained for the rest of the day by designing some kites. He had started the actual construction on one when he heard knocking on his door. He glanced at a clock and saw that it was almost time for dinner. He got up and started walking towards the door.

Could it be Shining Armor and Cadence? he thought as he opened the door.

"Hey!" Shining Armor said. "Nice, you've done the three way fusion!"

"Hey," Intellectual Changer said. "What brings you here?"

"Cadence wanted me to come see if you were alright after last night," Shining Armor said.

"Yeah, I'm alright. I've also managed to fix the fusion spell and have re-casted it." Intellectual Changer said. "By the way, I have named myself Intellectual Changer." Shining Armor grinned.

"Nice!" he said. He glanced at Intellectual Changers horn and antlers. "Nice horns, by the way."

"Thanks," Intellectual Changer said.

"You're pretty....horn-y fused, huh?" Shining Armor said, trying to keep himself from laughing.

"You're so mature," Intellectual Changer said. "But yes, I am." Shining Armor laughed.

"Hey, Cadence wants to see you tonight at dinner, by the way," Shining Armor said. "You don't have to dress fancy or anything, but be prepared for her to ask questions."

"Ok, thanks," Intellectual Changer. "Are you sure about me not dressing up?" Shining Armor nodded.

"Of course," he said. "We'll see you later, then."

Later that day, after lunch and Intellectual Changer finishing the kite (and solving several other problems that Eclipse Seeker had worked on a little) he started heading towards the castle. The guards had been told about him, so they expected to see him, but Intellectual Changer could still sense their surprise and shock. When he neared the dinning room, he heard a surprise. It sounded like Twilight was talking. As he entered the room, he relized that it was Twilight.

"Oh, hi, Princess Twilight!" Intellectual Changer said. Twilight snickered.

"You don't need to say princess," she said. "So this is the three way fusion?" Intellectual Changer nodded.

"Yes it is," he said. "I have named myself Intellectual Changer. By the way, I've managed to figure out how to fix the fusion spell." Twilight raised her eyebrow.

"What do you mean fix?" she asked.

"It should no longer have a time limit," Intellectual Changer said. "Eclipse Seeker-he was the both gender fusion-had already started to try and fix it, but thanks to adding Thorax to Eclipse Seeker, I was able to figure it out." Twilight gasped.

"Really?" she asked. "You've fixed it?"

"I'm pretty sure," Intellectual Changer. "I used the new spell this morning, and we'll need to wait another 4 days until we see if it works or not." Twilight grinned.

"Lets hope it does," she said. "I've been wondering about another experiment that you could help me preform." Intellectual Changer smilled and nodded.

"I would be honored," he said. "Can I ask what the experiment is?"

"I've been talking a little about with Shining Armor and Cadence, actually," Twilight said with a blush. "It actually involved fixing the spell."

"Well, then it's a good thing I got it fixed now," Intellectual Changer said. "Was that all, or was there something after that?" Twilight nodded.

"Basically, I would fuse with my friends and the other princesses, not counting Cadence, and maybe Sunset Shimmer," Twilight said. "Thorax and Sunburst would need to fuse with Spike. Then those two fused people would have to have sex during heat week."

"So we aim to get a fused woman pregnant with a fused man?" Intellectual Changer asked. When Twilight nodded, he said "Interesting."

"You don't mind doing that, do you?" Twilight asked nervously. Intellectual Changer smiled and shook his head.

"Oh, no," he said. "Thorax and Sunburst would be fused with Spike, so referencing Shining Armor's joke earlier, I would be quite horn-y," he said, pointing to his horns. Cadence and Twilight face palmed while they laughed as Shining Armor slapped his leg and started laughing loudly.

"Yes!" Shining Armor said. "Yes! Ok, now I'm more comfortable with this idea."

"So, we have a kid?" Intellectual Changer asked. "What's the plan after that?"

"We find out if a fused couple can have a child," Twilight said. "I know that a between gender fused person can, because you apparently did. But if we can have a child, then we study him or her." Intellectual Changer nodded.

"Well, first we have to see if the new spell works," he said. "Which is what I'm doing now anyway." Twilight nodded.

"Fortunately, heat week is in a little more than a month," she said. "But more importantly, if this spell does turn out to be good, can you send me it?" Intellectual Changer nodded. "Good. Now where's the food?"

Intellectual Changer: Epilogue

For the next few days, Intellectual Changer kept himself entertained by doing a variety if things: making kites, studying, reading, and talking with Cadence and Shining Armor. Until the day that the pain would normally come and he would have to defuse. If it were the normal spell. Of course he was hoping that he wouldn't have to defuse because of it, so he was going that our worked. On that day, he was preparing a letter for Twilight in case it did work. Cadence and Shining Armor had paied him a short visit earlier, and he was preparing himself for possible pain. And it never came.

"Yes!" Intellectual Changer exclaimed. He started charging a spell to send his letter to Twilight through Spike, and after a few seconds, he casted it, the letter disappearing, and hopefully exiting Spike through a burp. Intellectual Changer sighed and thought about what to do next.

I'll probably wait for a possible response from Twilight, he thought. Coincidentally, a second later a letter appeared in front of him. He picked it up and unfolded it.

Thank you for your hard work, Intellectual Changer (of course, that goes to each person that makes you up) for all of your hard work! These contributions will help along Equestria, and hopefully the world! Now, of course, there is our other little matter we must discuss. Heat week is in less than a month, and as I told you while I was at the Crystal Empire, I would like to do a little experiment. I would like all three of the ponies that make you up, Intellectual Changer to come the Crystal Castle for this in 2 weeks. You don't have to if you don't want to, but I would like you to. From Princess Twilight.

Author's Note

Well, this is the final chapter of The Multi-fusion. I hope you liked it and the next story will be released soon-ish.