AN: This one was another bunny on the TF Bunny comm on LJ. I seriously love that place. Many thanks to norielit for letting me adopt their bunny. The basic idea is Perceptor has the same battle programming as the twins. If he goes without a fight for too long, it causes big problems. But most people think Perceptor is a pacifist.

Disclaimer: I don't own, much to my dismay.

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Perceptor was edgy. Sunstreaker watched him from across the room. It paid to watch mechs that acted like that. If Sunstreaker didn't know any better…but, no, it was impossible.

But still, he watched as Perceptor set himself up with an energon cube and sat himself so his back was to the wall. The scientists hands clenched and unclenched around the cube. He was watching people the same way Sunstreaker was.

"Interesting," Sunstreaker muttered to himself.

"What?" Sideswipe asked, breaking off his conversation with Bluestreak.

Sunstreaker shook his head. He wasn't sure, and he wasn't going to jump to conclusions. That was Sideswipe's shtick, not his.

--

Perceptor definitely noticed Sunstreaker suddenly had more excuses to come into the scientists' wing of the Ark. Most people avoided that section like the plague. They'd rather not get caught up in one of Wheeljack's explosions.

"What do you want, Sunstreaker?" Perceptor finally snapped.

"A match," Sunstreaker answered. He stood in front of Perceptor with his arms crossed over his chest.

"A match? Sunstreaker, you know very well I don't fight."

"I also know very well that you want to." Perceptor shook his head and went to turn back to his work. Sunstreaker put a hand on the table and leaned in closer, invading Perceptor's personal space in a big way. "Don't deny it. I can see the evidence of your programming better than anyone. Sideswipe is too much of an aft or he'd see it to. We've got the same thing. So I know what'll happen if you don't get to slag something soon."

"I don't want to fight you, Sunstreaker," Perceptor ground out.

"If you change your mind…"

--

A few more weeks went past. Sunstreaker didn't go to the scientist's wing any more than he had to. Perceptor's programming was starting to hurt. Controlling it wasn't coming any easier. He was beginning to think Sunstreaker was right.



And beginning to think that only made him think about Sunstreaker's offer. It would feel so good to finally let loose on something, on someone. Sunstreaker was a big enough, brawny enough model to take anything the out of practice scientist could dish out, so he wouldn't have to worry about damaging Sunstreaker too much. Reasoning like that only made the programming strain more against his control.

Finally he couldn't stand it anymore.

Perceptor threw his tools down on his work table and left his lab. He didn't bother tapping any of the security feeds to find Sunstreaker. The frustration of looking would add a nice build up to his programming. He went into the rec room and looked around. He ignored the people who asked if he was all right. He was about to leave when his programming alerted him to a looming presence behind him.

"All right there, Percy?" Sunstreaker asked snidely.

Perceptor lowered his eyes to the ground to keep everyone from seeing the wicked smirk that crossed his face. "Oh, just fine, Sunstreaker. Do you mind helping me with something, please?" He turned quickly and leapt on Sunstreaker.

Sunstreaker grinned. Finally.

--

The fight ended with Sunstreaker sitting on Perceptor's back and shoving his face into the floor. Both mechs were dirty and leaking. "I give," Perceptor managed to say, his voice much lighter than it had been in a long time.

Sunstreaker slid off Perceptor and helped him up into a sitting position. "Feel better?" he asked.

"Much. Thank you."

"You could have picked a better place, you know. You know how much brig time and punishment detail we're going to get for this?" Sunstreaker looked around the destroyed rec room. Tables and chairs had been overturned and most had been broken. There was spilled energon all over the floor, either from the mechs themselves or the cubes others had been drinking. A few mechs were groaning and leaking energon too. They'd tried to stop the fight between the two, not knowing what was going on. That had turned out to be a very big mistake.

"Well, I had intended on taking it to the training room, but, when inspiration strikes…"