Disclaimer: I don't own Transformers or any person, place, or thing attached to it. It belongs to Hasbro. Don't sue me.

Note 1: This takes place during the start of the Decepticon rebellion. I figure they probably wouldn't have been well trusted by Cybertronians at all if they were called Decepticons at the time, so I call them by their Japanese title "Destrons" until they adopt the name "Decepticons".

Note 2: This idea came to me a while ago. This is basically the story of Ultra Magnus, or rather Ultra Dion before he was Elite Guard, and Perceptor during the start of the Great War.

Note 3: To anyone who's waiting for Snow and Pretty Toys, I'm so sorry! I didn't mean to start a new one! It just sort of happened!

WARNING: This fanfic gets very sticky very fast! In fact, this first chapter has not only Sparkbonding, but also Plug'N'Play and Sticky between two mechs! No Likey, No Ready! The pairing is Young!Ultra Magnus (Ultra Dion)/Young!Perceptor.

Chapter One
The Mission:

"Ultra Dion!"

He'd never asked to be a soldier. He didn't know anything about fighting. And many of the Destrons… he had once considered them his friends. Why would they do this?

"You have completed your training as a soldier under the newly developed Autobot army! You have completed your tests and training with high honors."

That was almost a joke in his processor. He had simply done whatever came naturally to him. He only knew how to function as a soldier from his previous function running errands for the Destron military before they rebelled.

"Are you ready for your first assignment as an Autobot soldier?"

No. "Yes, sir."

"Good. Bring him in."

Ultra Dion turned around. He himself was a bulkily armored soldier. Or, at least he was now. He was blue and white, carrying a modified battle hammer on his back. It was like a smaller version of the Magnus hammer the Elite Guard commander before him held. The Magnus wasn't who he was focusing on, though. He was focused on the young mech trailing behind the guards at the door. He was young, the mesh covering his internal components a light green. His armor, so much less than the impromptu soldiers around him, was red and black.

"Ultra Dion, this is Perceptor. He is quickly rising to become the foremost expert on Cybertronian modifications we have seen."

Dion was taken aback. The mech had to be younger than he was. The young scientist looked at him with curious blue optics, seeming to pick him apart with his processor, almost determining what made him tick just by looking at him. The soldier had to pry his eyes away to keep from being hypnotized by the stare. "That's fascinating, sir, but what does he have to do with my mission?" he asked the Magnus.

The Magnus was patient. "Ultra Dion, he is your mission."

"What?!" Dion couldn't stop himself from his outburst. As soon as he cried out, the blue optics analyzing him turned away, looking at the floor shyly.

"Perceptor has already had two attempts by Destron rebels on capturing him. They have already captured three other scientists in hopes that they will reveal the secrets and weaknesses of our weapons, as well as develop new ones. Even if the scientists do not cooperate, they have ways of convincing them to. Megatron, the leader of the rebellion, has gone mad in his obsession for them to take over control of our home planet. If he got his hands on Perceptor…" he trailed off as the young scientist's optics widened in fear.

Dion looked at the mech he was assigned to protect and sighed. The poor bot was so frightened. So he looked back up at the Magnus towering above him. "Understood, sir. I'll protect him."

"Good. Your first course of action will be to escort him to his superior's office in the West Wing of the Science Division. There you will keep an eye on him at all times. You will not leave his side under any circumstances. Do I make myself clear?"

Ultra Dion felt he should have been mad that he wasn't given an actual mission. But instead he felt relief. Protect the scientist. That couldn't be hard. And at least he'd have company. He looked at Perceptor who was staring at him again with those analyzing optics. Okay, slightly unnerving company. But still, it was company.

()()()()()

"So…" Dion tried to make conversation as they walked down the hall leading to the front entrance and exit of the heavily guarded Elite Guard building. "Two attempts, huh? You doing okay after them?"

Perceptor looked away from him. Okay, not exactly the conversation he should have gone for. But still, he got a semi-vocal response. "Mm-hm." It was better than nothing.

"Um…" Dion searched for another topic. "What's your superior like?"

Perceptor looked back at him a moment. He then finally smiled a bit. "He's… alright, I suppose." His voice was light and airy, carrying the noble accent of the Elite. "He tends to demand too much of us, in my opinion. But I suppose that is the job of a Science Division head."

"What's his name?" Dion encouraged.

"Crosscut."

"The Science Division's council representative?"

"Mm-hm," Perceptor nodded. "He took me to a few council meetings. He says that when he retires he wishes for me to run the Science Division. But, well…" He trailed off, looking at the ground as they neared the door.

"But?" Dion pushed.

"But… I don't want to be bound here. I want to go out there. Explore. See new planets, observe the technological differences, compare intellect with alien species."

Dion nodded. He understood being pushed into something he didn't want to do. That was his problem at the moment. But he didn't vocalize it. "Alright, we're going to be very careful when we cross the guard line for the building. Okay?" he asked.

Perceptor went silent again, simply nodding.

"I'm sure nothing will happen," the soldier assured him. "But it's procedure, and you know what they say. Better safe than sorry, right?"

The scientist nodded again. He still looked nervous.

"Come on. Just… hold my servo, okay?" He held out a servo. The young scientist looked at it unsure, but finally took it. Dion had to note how much larger his own was in comparison. "Alright, just stay beside me and don't let go of my hand, okay?" Perceptor nodded again. They then took off down the street to the Science Division, Dion keeping an eye out for an ambush.

()()()()()

"Perceptor!" A red and white mech stood up as they entered his office.

"Hello, Crosscut," Perceptor replied lightly.

The head of science sized up Ultra Dion. "And this is…?"

"My name is Ultra Dion, sir," the soldier saluted. "I have been assigned to protect Perceptor from any potential kidnapping attempts by the Destrons."

Crosscut considered it, then waved it off. "I won't allow it. I will hire a proper bodyguard. Not a fresh-out-of-training rookie."

"I'm sorry, sir, but it's not your call to make," Dion took a chance by talking out of place. He knew he shouldn't have with a council member, but he didn't want to be fired from his first mission less than a megacycle after he'd received it. "This was a unanimous decision made by the Magnus and the other members of the council."

"What? They made a decision about my assistant without my input?"

"It was because I am your assistant," Perceptor said, looking a bit embarrassed. He obviously didn't often speak out of turn. "You have a bias opinion since we share a close working relationship. The only logical conclusion was for you to not be included in the proceedings to prevent your bias from causing a problem in the decision."

"Nonsense," Crosscut waved it off. "We share no relationship past scientist and assistant. But, I suppose I cannot bring up issue until tomorrow. Until then I suppose we shall see if you are worth the energon spent on training you, Ultra Dion."

"Thank you, sir," Dion said through his gritted teeth. This scientist simply seemed so full of himself. And waving off the prospect of a simple relationship between him and his assistant caused Perceptor to look away in embarrassed disappointment. "It's getting late. May I escort you to your living quarters, Perceptor?"

The young scientist looked back at him before nodding. Dion was getting annoyed by those simple nods. He got an idea of how to take care of them, but he couldn't implement it in front of Perceptor's mentor. So he instead said, "Alright, lead the way."

Perceptor quickly left the room with a simple, "Recharge well," to his superior. The other simply waved him off, not improving the young scientist's mood.

As soon as they were far from the office, though, Dion grabbed Perceptor's wrist. The latter turned quickly, never having been stopped like that before.

"I'm making a new rule," Dion explained. "From now on, I want you to use that vocal processor. We're not going any closer to your quarters unless you say something about it."

"About what?" Perceptor asked, sounding puzzled.

"Whatever I've asked you to do. I want you to actually verbally tell me that you understand what I've asked you to do."

"This is ridiculous," the young scientist huffed.

"No, it's not. If I'm going to be protecting you I need to know that you can speak to me."

Perceptor stared at him a moment before sighing. "Very well."

"Good. Now let's try this again. May I escort you to your living quarters?"

Perceptor almost nodded, but then looked away. "Yes…" he muttered.

"There, that wasn't so hard, was it?"

"Will you release me, please?"

"Of course." Dion let go and allowed him to continue leading the way. At least they'd come to an understanding. But what was it that this strange young mech had against verbalizing? After all, his vocals were quite pretty.

Dion suddenly stopped, shaking his head. 'Whoa. Where did that come from?' he thought. Now that he thought about it, he never really thought about it before. He was spending so much time around military bots that he'd never really met someone as soft as Perceptor. Even the femmes in the military, even in this make-shift one for the Autobots, weren't exactly dainty. But here came Perceptor, a young mech so very different from everything he'd know…

That had to be it. He wasn't really attracted to him in that way. After all, he was Dion's mission. It was simply the fascination over something so different than what he was used to.

"Ultra Dion?" Perceptor had stopped, and was once again analyzing him with those deep blue optics.

"Yeah, I'm fine!" Dion ran to catch up. "Sorry, I was just… thinking."

"Oh." They continued walking. "Of what?"

"Of what?" Dion echoed nervously. "N-nothing in particular, you know, just… things."

"Hmm…" It was a pretty vocal hum, so clear and flawless. So inviting…

'No!' he told himself. 'He's my mission! The first basic rule of being on a mission is to develop no personal feelings for it, no matter what it is! No matter how much you want to! No matter how pretty it is. Or nice. Or soft…'

"Ultra Dion!" Perceptor said a bit more forcefully.

"Hmm? What?"

"You were… thinking… again."

"Oh, sorry," the soldier said sheepishly. "And just call me Dion, please."

"Alright," Perceptor smiled a bit shyly.

Dion looked in wonderment. He was made so happy with such a simple thing. Why couldn't Crosscut manage to make him smile like this? He decided to venture forth, see if he could draw him any farther out of his shell. "Is there anything I can call you for short?"

Perceptor blushed a bit, then looked away without responding. Dion cringed, thinking he'd pushed too far. But no, after a moment the scientist answered. "Percy. You… um… you can call me Percy…"

"Sure. Percy."

Perceptor's smile widened a bit. The poor mech must have been almost completely deprived of proper social interaction. He was so withdrawn, and craved someone to give him attention that didn't have to do with his processor. "H-here we are," he stopped at a door, pushing the button, sliding it open.

"Nice," Dion grinned. The room was large, probably just for their special spark of processor. "Do you get this whole room to yourself?"

The scientist's smile faltered. "Yeah… all to myself…"

Dion cringed. He hadn't meant to upset him further.

"W-would you like to come in?"

The soldier looked at him in surprise. Perceptor was blushing again. He shouldn't, it would only tempt him. But, only a few kliks couldn't hurt… could it?

"Well?" Perceptor stood waiting expectantly. He looked so hopeful.

"Sure," Dion finally gave in. "I'll stay a while."

()()()()()

The room was larger than most of the quarters that berthed four trainees back at the newly established Autobot Academy. Most of it was covered in datapads, machines, and tools. "I'd think you'd want to get away from your work here," Dion couldn't help but point out.

"I… I do," Perceptor sat on the edge of the large berth. "I mean, when I'm with Crosscut I have to work on whatever he says. But here I can do whatever I want. This is where I make most of the mods the council accepts as 'revolutionary' or… you know… whatever…" he trailed off, seeming uncomfortable talking about his smarts.

"Surely you do something else. I mean, all of these datapads can't be about mods."

"Well…" Perceptor looked embarrassed.

"Come on, Percy," Dion grinned, encouraging him.

Perceptor smiled at the use of the shortening of his name, and gave in. "You see I like to… dabble."

Dion raised an optic ridge. "Dabble?" he repeated.

"Yes, you know. I like to study lots of different things at least a little bit. Languages, planets, machinery, other bots…" he looked up at Dion as he said the last one. He was still smiling shyly. It was as if he wanted the soldier to let go of what little restraint he had left. Sitting on the edge of the berth. Smiling so sweetly. With those beautiful, blue optics.

'Rules be slagged, I'm getting personal!' Dion finally thought, quickly joining Perceptor on the edge of the berth. He snuck an arm around the young scientist's thin waist, drawing their faceplates close.

"Dion…" Perceptor blushed, but didn't push him away.

"This doesn't have to be a time to vocalize," Dion teased. He gently closed the gap, testing the waters. He brushed their lip components together, feeling that gentle, shy smile against his. He couldn't help but smile back. He'd known the scientist for less than three megacycles and here they were, exchanging gentle kisses on his berth. It didn't take long for him to actually push their lips together, lightly feathering his servos across the soft curves of his pretty mission subject. The kisses that were returned were timid but willing.

Dion realized this was probably the first time the poor kid ever experienced something like this. He was so withdrawn, he wouldn't be surprised if he'd never been touched like this. He had to be tender. Take it slow.

Thin servos reached up and rested against his chest plating as they continued to exchange kisses. Dion pulled back and looked back at the scientist. His faceplate was tinted red around his cheek components, blue optics shining. Perceptor thought he'd done something wrong and began to withdraw his hand. But Dion caught it with the servos he had been using to skim patterns across the chassis beside him. "It's alright. I'm just looking."

Perceptor smiled again, looking away shyly. "At what…?"

"The prettiest mech I've ever had the pleasure of meeting."

"That's highly unlikely…" Despite his objection, his smile widened, blushing deeper. "But it's nice to hear…" he admitted lightly.

Dion didn't reply, placing a gentle kiss on the exposed wires of Perceptor's neck. The scientist gasped a bit. "D-Dion…" he breathed the name sweetly. It was eating away at the restraint Dion was using. He softly pushed Perceptor back onto the berth so that he was laying underneath the soldier.

"So pretty…" Dion muttered, stroking the scientist's cheek with his servos. "I've never seen anything so soft and inviting…" The servos trailed down Perceptor's neck, eliciting gentle moans. Then down his chest plating, down his abdomen, finally brushing against the wires between his thigh and pelvic plating.

"N-ah…!" Perceptor suddenly jerked, yelping and pushing the mech on top of him a bit. He looked embarrassed.

"I'm sorry," Dion sighed, removing his servos from their offending place. "I won't do anything you don't want me to."

"N-no! I mean, I'm sorry!" Perceptor all but yelped. "I… I was just surprised! I promise, you don't have to stop!"

Dion paused. He had to be sure. "You're sure you want to me to keep going?" he asked. Perceptor nodded quickly. "Nuh-uh-uh. Remember what we discussed before?" He smiled, bringing his faceplate close again. "Use your pretty vocals…"

Perceptor blushed further, but then said, "Yes, please continue!"

Dion smiled, lowering his servos again. He once again ran the servos along the wiring of his pelvis, drawing out sharp gasps, moans, and the occasional cry. But indeed, he no longer pushed away, after a while actually beginning to move his hips in encouragement. His spark chamber, hidden beneath his chestplate, pulsated. Dion's own responded in kind, craving the writhing, pleasure-filled creature under him.

The servos finally moved, Dion placing himself between the scientist's legs. His own pelvic plating felt tight and desired release. He panted, bringing his lips next to the moaning scientist's audio receptors. "Let me interface with you…"

Perceptor gasped, optics wide. Dion ground their pelvises together to help him decide, though. "Aa-ahn!" the scientist cried out, his pelvic plating retracting, revealing his port and plug. Dion's own pelvic plating did the same, and he kissed the writhing scientist as his plug slid into the other mech's port. Perceptor gasped and cried out against his mouth, feeling the throbbing invader retreat before pushing in again and again. It hurt and pleased at the same time, stretching virgin tubing and pushing against sensitive wiring.

As they interfaced Perceptor couldn't stop his chest plating from opening up, the pleasure craving completion. Dion was all too happy to comply, opening his own spark chamber and pushing the two together as he kissed his pretty mission subject. He gripped Perceptor's knees and pushed them up and apart as his plug worked at the scientist's insides, their sparks dancing and glossas wrestling. Their chassis rubbed together with Perceptor's own plug between them, pleasuring him to the point where he couldn't hold on. He finally overloaded, spark flaring and plug releasing its milky white lubricant between them as he pulled away from the kiss and cried out. Dion wasn't far behind, filling the scientist under him with the same milky substance, spark syncing itself with Perceptor's, grunting in pleasure.

Dion finally collapsed on top of him, both panting, cooling fans working overtime. They were sticky, tired, and satisfied.

"That was… wow…" Perceptor couldn't seem to articulate his pleasure, simply laying in sticky, wet, hazy bliss.

"Mm-hm," Ultra Dion pushed himself to the side, off of his berth partner, now bondmate. He had to think of that. Within four megacycles he'd interfaced and sparkbonded with his first mission.

"Dion?"

"Yeah?"

"I… I think I love you…"

Dion smiled, pulling his scientist closer, stroking his side affectionately. "I certainly hope so. Because I know for a fact that I'm definitely in love with you."

So much for taking it slow.