Sorry for the delay. I've been a bit busy. Anyway, as promised this chapter is the lemon. This chapter will be longer due to the leading events. You will also meet Vertigo.

DISCLAIMER: I do NOT own Transformers Prime or its characters. I only own Lunarstreak and Vertigo. A new character may be added later.

I woke up to a sharp pain in my arm, a chronic processor ache and my body was in severe pain. I couldn't even move let alone speak. My arm hurt as if someone stabbed it with an energon dagger and injected me with raw energon at the same time. I then felt something move on my side and I felt for it, thinking it was Knockout.

Big mistake. In an instant, something bit my advancing and shaking hand. I winced and opened my optics as soon as the bite hit my wrist and the burning sensation got worse. I immediately looked to where I was reaching, my vision clear enough to just barely see a large cybertronian viper hissing at me with its body coiled. It was pissed.

I began to fear for my own life and tensed, looking around the room for Knockout. I couldn't find him. I tried my best to get out of bed as my vision continued to fade, falling to the floor with a loud and painful snapping of metal. My arm hurt like hell, but that wasn't my priority. It was getting away from the snake getting ready to strike again from the sudden movement. I backed away into the farthest corner from it, ignoring the pain writhing in my left arm when I put weight on it. Then it lunged. Everything suddenly went black and I couldn't move. The last thing I heard was loud knocking and 3 voices belonging to Megatron, Breakdown and a Vehicon.

I heard the wirr of a healing chamber dieing down as several voices yelled at each other to 'get it'. I couldn't remember anything that happened before I blacked out. I felt changed. Physically changed as if my body had been rebuilt. I couldn't hear Knockout's voice.

I felt something coil against me and hiss loudly. I became afraid as I began to remember what happened. I felt a tear fall from my left optic as everything went silent for several minutes. The coil relaxed and rested itself in the grove of my waist. I shivered before the silence was broken. I heard Knockout's happy whistling die as the door hissed open.

"Lunar!" He ran straight to my side and I felt his feather light hands shake me gently to try and wake me up. The thing resting next to my waist tensed and hissed angrily from the unwelcome wakening. "Primus! When the hell did this get in here!"

I felt his hand accidentally hit my forehead when he jumped and I winced, involuntarily moving a hand to my head and groaning just in time for the thing to lunge and bite my arm instead of its target. It surprisingly didn't hurt like it did the first time. Something was missing from its mouth. I opened my eyes and took a look at the random feeling on my arm.

The viper looked at me and blinked, obviously unsuspecting the sudden movement. It was the same thing that bit me, but it was as long as I am tall and the same thickness as my arm. Its optics had changed as well. They weren't an odd sapphire like they were earlier. They were my own optics. Energon started to leak from my arm in this awekward moment and Knockout looked at us in shock, noticing changes in my body and the viper's unusual body proportions and shape.

We continued to stare at each other in silence when a voice entered my head. It was breathy and smooth and the vowls were long. It sounded sorrowful as the viper looked at me in sadness, backing off and whimpering when he rested his head on my chest.

"Y-you're the one I b-bit... I-I'm so sorry... I didn't mean to... I-It was a reflex... I tried to tell them but they couldn't understand me so I followed you into the chamber... I didn't mean for us to be mixed..."

I thought it was pretty cute until he said mixed. I sat up and braced myself up with my arms behind me, looking around as if I had just came back to life and I had no idea where I was. That was when I saw Knockout's face and looked over myself. I had changed drastically, but I could still recognize myself.

My abdominal and back had stretched and I had become taller and more serpentine, but i still had my basic design. I blinked and looked at the viper. He still looked at me with those sorrowful optics.

"What's your name?" My voice didn't change that much. It was a little more breathy but just barely.

"I-I don't have one..."

I thought for a little bit as Knockout got up and grabbed my wrist carefully, his touch remaining feather light and gentle. He nervously surveyed the damage, trying to steer clear of the viper. He looked a little off balance.

"Do you like the name Vertigo?" The viper's face lit up when I said the name and nodded. "Then that will be your name."

He rubbed his head against my hand in an attempt to scoop it over his head as he made a purring sound. I smiled. "I'll never bite anything unless you say so. I promise."

I rubbed between his optics gently. He seemed to enjoy the attention and purred louder. This was the cutest thing I've seen since my father got me a tamed scraplett as a sparkling.

"He won't hurt anyone, Knockout. Knockout?" He seemed deep in thought as he stared at the bite wound on my arm. "What's wrong?"

"Usually when a viper of his kind bites someone, it leaves two deeper holes. This bite only shows his tiny teeth for griping onto prey when swallowing. But there are gaps where they would go." He looked a little worried. I knew what he was saying. And it pained me to admit it. I had taken Vertigo's fangs. "I want you to stay here to run tests. I'll be in for your check up in a few hours."

I sighed knowing I was put on bed rest. This was the one thing I hated most. Not being able to move to anywhere or even stretch out my legs. I saw him leave as I continued to pet Vertigo.

-Time Change-

I was alone in the ship. Vertigo had slithered off to feed himself on the infestation of scrapletts I had heard about from a passing Vehicon. That was all that was here in the Nemesis. Me, Vehicons, Vertigo and Knockout. Everyone else was out training. I sighed in boredom.

The door hissed open as Knockout walked in. I could tell something was on his mind because he didn't have a happy expression his face as he got to work on my check up. He worked in silence at a slow pace until he sighed in frustration.

"Primus, damn it. I can't take it anymore." I blinked as he placed the unfinished report on the desk off to the side and strolled over to me in a hurry. My spark started to beat rapidly as he climbed onto the table and pinned me to it, holding my wrists firmly yet gently as he hovered over me. He started to purr. "I can't hold onto this low profile relationship. I want to make you mine. I want to take you as my permanent sparkmate... I just can't wait anymore..."

I began to get even more nervous as he lowered himself onto me, pressing his abdominal against mine and moving in a thrusting manner and being rougher than he had been the first time he had done this. He started to nip at my neck to get sensitive wires gently as he purred in my audios. I tensed. I was not expecting something like this so soon.

My spark decided to try and make its way out of its chamber. Or at least that's what it felt like. I started to become aroused when he finally reached a nerve and moaned very slightly, barely audible in his audios. He continued to play with it as he let a hand go and slipped it downward to my spark chamber. My spark beat even more rapidly against the walls around it. He started to rub it.

I moaned as his feather light fingers moved against my spark chamber, eventually slipping his fingers inside it and opening it gently. He opened his as well, seeing our sparks try and pull to each other. He lowered his hand further and unlatched his shaft armor after he undid the armor protecting my port, making his spark tease mine as I whimpered when one of his fingers slipped into my port. I moaned in his audios and he smirked.

"Primus. Your soaked in lubricants." He purred as he tried to loosen his finger in my port, moving it around until he could thrust it in without a problem. "You've never mated before. I can tell."

"A-And y-you have?" I moaned in pleasure and squirmed as a second finger decided to join the first. He chuckled, his sexy swooning voice rumbling my spark.

"No actually. I'm letting my body act on its own." He plunged his fingers deeper and wiggled them, making my back arch as I moaned loudly.

Upon hearing my moan, he pulled out his fingers and tasted my juices as he purred. He watched me relax with a smirk and lowered himself on my again, making sure our sparks didn't touch yet. His lips touched mine in a passionate kiss.

Before I could react, he pushed his shaft into my port, causing me to wince in pain and tense. I gritted my teeth as a tear fell from my optics.

"Shh, Lunar. The pain will go away soon. I promise." He started to thrust his hips slowly and gently as I winced in pain. Then pleasure shot throughout my body as I got used to it. I started to moan, signaling to go faster.

He complied and grunted as he pushed himself deeper and faster, making me moan louder and louder as he braced himself with one arm, rubbing just below my spark chamber before pressing gently on my stomach. He was persistent on hearing me moan.

After he was done pressing on my stomach, he adjusted to get deeper and faster. He soon found my sensitive nerve, making me moan his name out loudly and begin to pant as I wrapped my legs around his waist.

That was what he was waiting for. He lowered himself on me again, this time pushing his spark into mine, knowing it would accept it. The two orbs locked together as he moved faster, moaning my name softly as he started to pant before our sparks gave way and separated, the harsh movement breaking a peice of each other off and absorbing the fragments to complete the bond.

We both screamed each others names as we climaxed together from intense pleasure. I could feel his warm genetic lubricant spill into the very depths of my port. I continued to hold onto his shoulders until I relaxed, allowing him to collapse next to me as our sparks beat in unison while we panted.

Knockout was able to close our spark chambers and reapply our armor as soon as our coolant systems kicked in, steam rising off of our bodies as if we had just came out of a hot shower. He then lied down next to me, his arm around my waist as he purred in my audios as gently as a little kitten.

"Sleep, my sexy Viper. You need it."

Ok then. First Lemon! Let me know what you guys think about it!