Alright, basically it's a story based off on the "Ben 10: Omniverse" TV series - only with an OC of my own making. This will not simply be an "insert" as most of you say. I might change a few things in the episodes and perhaps even make chapters of things happening in-between episodes. I shall try my best to keep my character from being "Mary-Sueish", but if it seems like it's bordering on the edge of becoming one - or already is -, do tell please.

Disclaimer: I own nothing but my OC.

Chapter 1: Meeting Family Friend

Tick, tock, tick, tock, tick, tock, tick, tock -

I pulled my ear away from my favorite black watch after nearly falling asleep from the relaxing sound. For some reason, people find it annoying. Me? Not so much. A whistling sound started coming from behind me so I craned my neck back to see who was the source of it was. Figures. Janitor with earbuds happily wetting the already shiny white tiles with an old, rusty mop. Sigh. I pulled my lip inside my mouth and started gently nibbling on it - unfortunate habit I've been growing annoyed with for some time - old habits die hard. It's been half an hour since I got to the airport, yet no sign of anybody coming to pick me up.

You see, my parents thought that it would be a good idea for me to bond with an old friend of theirs. Quite strange from my perspective seeing as they allowed me to travel to the United States - alone. Not even my younger siblings came along. Chances like this one present themselves once in a lifetime though, so I instantly took it - alright, maybe I questioned their odd behavior a few times, but I came nonetheless. One thing I didn't like: Other than his last name, I knew absolutely nothing about this so called "old friend". My parents seemed to be in kind of a rush so they barely gave me any explanation or description about him. All I know is that he's a Tennyson. Was that it? Tennyson? I'm not sure. I have a really bad memory - which is a great liability if you ask me, but I'm trying my best to overcome it. Sigh. Oh well.

"Excuse me, are you...Rosalinda?" I heard a voice come from my left. When I turned I saw that it was a boy; brown hair, piercing green eyes and an uncertain look in his face.

"Um...yeah, I'm her...but...who are you?" Stupid question, if he knows me, then he has to be my ride, but I don't think that a teenager is supposed to be a long lost old friend of the family.

"Tennyson, Ben Tennyson. Maybe you've heard of me - major hero, always saving the day, omnitrix, you know the drill." I blinked. Tennyson. Nailed it.

"Actually...I...don't." What was he talking about anyways? He said he was a Tennyson though and that alleviates me greatly.

"What? You mean you've never heard of me before?" He seemed stressed at the fact that I didn't know him. Not my fault.

"Sorry but...I really haven't heard of you." He sighed and slumped.

"Alright, come on, grandpa'll have my head if I don't get you to the HQ soon." I raised a brow at this, standing up as I did. I dragged my gigantic suitcase along. I didn't ask for his help but I was surprised when he didn't offer it. I would've still said 'no'...yet I think it's really impolite when a boy - seeing a skinny girl like me trying to weigh something that's probably half her own weight - doesn't offer his help to a girl in need. Not that I was that desperate.

"HQ?" He started walking away and waved away my comment with his hand as he explained. He seemed very nonchalant yet at the same time somehow preoccupied; weird mix.

"Yeah you know, headquarters." I rolled my eyes. Okay...first impolite, then nonchalant and now smart ass? Sorry Ben, but you're not exactly giving your best "first impression". I had a feeling I knew why he wasn't bothering in giving me his best act though...

"I know what it means, it's just that...my parents didn't tell me anything about this. In fact, where exactly, are we going?" We had gotten out of the airport and were now going towards a goofy-looking van - and by "goofy", I mean that it had a 'chibi' character drawn on it's side. I think the reason Ben isn't bothering too much with me is because of my physique. I'm not exactly "a sight for sore eyes" nor a beauty or anything like that. With glasses, sneakers, black hoodie, T-shirt, pants less tighter than other girls wear them nowadays and no make up, I probably strike him as a nerd stereotype. Either that or he had something better to do than come and pick me up.

"Oh, well...I don't know much about any of this either. I was just told to come and get you." I looked down, slightly disappointed at the lack of answers, "So...does this mean that you've never heard of aliens and wacky stuff like that?" My head snapped up at that. I had heard news, reports, between other stuff from crazy people; my dad and I love everything regarding supernatural themes, so I knew a thing or two.

"Well, I watch the news about all of that stuff but...hehe, anything regarding actual, concrete and absolute evidence...not so much, no." He stopped right in front of the van and whirled around to look at me, getting straight up to my face. He had a...look, that seemed to border between shock and worry. What the...? Personal space much?

"Y-you mean you don't...believe that aliens exist?" I was taken aback. I did a once over him. He seemed like a fairly normal kid; T-shirt, baggy pants, sneakers, watch - actually we have a similar sense of fashion, not a good thing -...I would've never pictured him as a geek. Appearances fool, I guess. I should learn not to judge others, it's pretty hypocritical coming from me.

"Sure I do. Just because I have never seen one, doesn't necessarily mean they don't exist." His brow furrowed, putting a finger up to his chin which let me have a full-on view of the strange design his black and green watch had. I couldn't even see the time because there was nothing to tell it with. It was just green and black. Must be something new.

"Um, this might be a problem." Before I could ask him what he meant, a door opening and closing from the other side came with a new voice.

"Ben, have you retrieved Miss- " The voice stopped at the same time I saw a figure coming from the other side of the van. I froze immediately.

"..."

"..."

"...- Pedrosa?" Finished the strange...thing...before me. Oh boy. Oh boy. Oh boy, oh boy, oh boy! Wha - what?! Just, what?!

"What in-?!" Ben covered my mouth before I could finish and pulled me back a bit. At first my eyes kept themselves large from the surprise, then I frowned and had to restrain myself from biting down on his palm.

"Ben! What are you doing?" Yelled the creature, sounding very much in distress. Said boy holding me groaned in exasperation and then he laughed nervously.

"Listen, uh...I know this is probably kind of weird for you but trust me on this...we won't hurt you at all - so please don't scream." He said the last part in a pleading tone. I grabbed his hand and threw it from my face, then turned away from the 'thing' to look at Ben.

"What is going on? Because I know that Halloween is months away!" Stupid answer, I know. He held up his hands in a surrender position and waved them around.

"It's a really long story - we could tell you all about it on the way to headquarters!" He said as he grinned sheepishly.

"We?" I asked, and that's when I saw a purple hand landing on my shoulder. I jumped slightly and whipped around immediately, knocking into Ben who staggered slightly. Face to face with an actual alien...I could not believe this. In that moment I studied it throughly. It was mostly a lilac shade with white and black markings on it's face, pointed ears, red irises with the eyeballs being yellow and a high tech body armor. Wow.

"Yes. I am Ben Tennyson's partner, Rook Blonko." He gave a simple nod - at least I think it was a 'he', the voice, physique and name all pointed towards that gender.

"Yup. So how about if we get going?" Said Ben, coming from behind me and putting his hands on my shoulders as he pushed me to the passenger door of the van. What have I gotten myself into?

||~[¥]~||

~Max's Plumbing Van~

7:35pm

15 minutes of explanation later...

"Alright, let me see if I got it all down...There's a secret organization called Plumbers that deals with any alien occurrences and such. You two and Max are all Plumbers. Alien attacks occur nearly on a daily basis here in Bellwood. You have a special device called 'Omnitrix' that looks like a watch and allows you to change into different alien life forms from all around the galaxy. You've fought many times against different aliens that have threatened our planet - and neither of you have any idea why I'm being taken to the Plumber's HQ?" I listed everything down with my fingers, getting exasperated with my last one.

"Yup."

"Correct." I slumped in my seat - which was between both Ben and Rook - technically not a seat just a spare spot because I'm not wearing a seatbelt and Rook already gave a warning about safety and such -, who I learned is rather very intelligent and polite. In my opinion so far, completely the opposite of Ben.

"What have I gotten myself into?" I muttered to myself as I took my glasses off and passed a hand down my face.

"Hey, don't worry. It's not that bad." I glared at him through narrowed eyes.

"You told me you're basically an alien magnet with that thing on your wrist - wouldn't that mean that we could get attacked by an alien right now?" He raised a brow at me, removing his hands from behind his head - I saw Rook looking at me curiously from the corner of my eye. I still wasn't used to the idea that he was an alien.

"Well, yeah...but that doesn't mean that we'll be attacked right now! Besides, there are a lot of other reasons aliens can have for attacking. Right Rook?" He turned to his partner for assistance, but when I faced him, his answer wasn't what I had expected.

"Actually, with your record, it would be most accurate to have something attack us." My eyes widened and when I turned I could almost literally see Ben sweat drop. He then glared at Rook.

"The idea was to not scare her Rook." Said alien raised a nonexistent eyebrow at this. He has pointed ears too...geez I am really bad at noticing this kind of stuff.

"My apologies. I was merely agreeing with her." He motioned at me, still looking between Ben and the road ahead. Well, nice to know that I'm invisible. I slumped again, this time putting back on my glasses and crossing my arms.

"Well maybe you shouldn't try to be on her side - seriously, not working."

"But I wasn't trying to be on her side, it was simply the truth."

"Um, guys..." I tried to get their attention by waving my hands slightly.

"Dude! She's not used to this kind of stuff! I bet she's already too freaked out by you!"

"Guys..." I shook Ben's arm but he was to absorbed in his argument with Rook.

"Why would I freak her out?"

"Guys you should really-"

"Just tell her - we won't get attacked anytime soon by any alien or bad guy!"

"STOP THE CAR!" Both their heads turned to me, surprised by my sudden outburst. I wasn't looking at either of them though - my dark eyes were fixed on the glowing figure, right on the middle of the street, less than five feet away from us.

"Wha-?" I interrupted Ben by pointing a purple, nail colored index finger to the front of the car. Almost immediately Rook slammed a foot down on the breaks, coming a mere few inches from hitting whatever that was. Our bodies all jolted forward from the sudden stop - mine nearly hitting the dash board because of my lack of seatbelt. Ben's outstretched arm was the only thing that held me from banging my head against it.

"What's that?" I asked as I looked at it, wide eyed.

"Uh...stay in the car, okay?" Ben didn't wait for an answer - he didn't even look at me before jumping out and locking the door! Rook was out in a flash too.

"H-hey! What do you think you're-?" That's when I saw Ben fiddling with his watch, before slamming his hand on a green, glowing beacon. I stared, unblinking, as his form changed shape completely.

"Ay, ¿en qué me acabo de meter?(1)" What in the world was that? It looked like a huge, yellow and black gorilla crossed with Frankenstein. Ben looked annoyed - or angry, I couldn't tell from here - at the transformation. Was it something he had not planned? Some trained hero he was. I watched entranced as the thing - now that it was closer I could tell it had a slight, reddish glow to it too, and it was carrying something resembling a giant, titanium thermos - roared viciously at the boys. Why did I call them that? Rook waited for Ben to make a move, which he did. Jumping high he went to smash the creature with two huge and powerful fists - the creature's retaliation was amazing - well, I mean of course that it was very efficient and powerful, because that wasn't a good thing at all. It stopped Ben's attack altogether and then threw him away with far too much applied force, sending poor Ben deep into the forest. I gulped at this, looking down at my seat. Would you believe I'm subconsciously looking for a weapon now? As if I could do anything.

I looked up again when I saw Rook move. He got from his back a fancy-looking gun - funny, I hadn't seen that either - and began firing away orange blasts. The attacks were absorbed into the body of the creature, which then started blinking in a show of different lights - almost like crazed, Christmas LED lights - and finally the same exact shots Rook had fired came flying back at him. Seeing this he jumped to the side, avoiding them all. Unfortunately, the blasts were still flying - and heading straight towards the car that I was in. Out of instinct I jumped down, shielding my head and felt the impacts hitting the metal of the van. No explosion or crystal shattering were heard. Huh? I peeked my head out and above the dashboard. Right, Ben mentioned this van was a lot tougher than it looked.

I gasped when Rook's body hit the front window. Covering my mouth I watched as he slipped down. I sat there. Alone. With a strong-as-heck of an alien staring. Right. At me. Oh boy. Oh boy. Oh boy, oh boy, oh boy! Without thinking I opened the driver's seat door and dashed into that side of the forest, hearing heavy steps that did not falter right behind me. This is not happening! This is not happening! I am not being chased by an alien! Rook and Ben are okay! I did not just commit the worse amateur move a girl in distress can do! Oh my God! I just made a blonde chick move! How stupid can I get?! I shrieked when an orange blast hit a tree three inches away from me and cowered away from the flying wood.

I looked behind me. Wait. I stopped. Where is it? Suddenly, paranoia kicked in.

"Why am I so stupid? I could've just stayed - but no! I made a blonde move! Stupid! Stupid! Stupid!" I hit myself repeatedly, somehow still keeping an eye out for the creature that would surely kill me. It's quiet. Very quiet. Definitely not a good thing. Okay. Calm down. Calm down. Nothing wrong here. I shuffled my converse across the ground nervously. Maybe it went back to beating the shmuck out of Ben. Or maybe it was clumsy and tripped. Or maybe it got lost. Or maybe -

"Rose! Look out!" Or maybe it's right behind me! I saw it from behind the trees. It happened in slow motion. Almost running to me. Vicious roar ripping through the earlier silence. Suddenly, a rope or cable whips out of nowhere, wrapping quickly around the supposed feet of the creature. It tumbles down. Thermos device flying out of it's grasp. The gray container keeps flying, before it lands directly in my hands - which I almost dropped from the sudden, heavy weight which I had not expected at all. For a few seconds I just stared down, confused, before I realized too late, that I was indeed holding an alien device - probably a dangerous one too. It shifted and opened, revealing a neon blue, sloshing about, substance inside. I gasped but that was the only thing I had time to do, because at that exact moment, my surprise filled gasp was drowned out by the bright light that broke out of the container.

||~[¥]~||

Oh...my head...hurts...

"- look...waking...maybe...bad..." I couldn't make out the voices that well because of the thumping inside my skull, but I was pretty sure I heard Ben's...I think...

"How's she looking?" Almost positive it's Ben. What's that poking I feel in my toe?

"Better than I expected - or any of us." New voice. Feminine if I'm correct. Am I at the Doctor's or something? Wait. What happened? All I remember is Ben and Rook getting their butts handed to them by that...oh no! I tried to open my eyes. We're they okay? What happened? I can't remember! Did I die? No...I heard - unless Ben died too.

"I think she should be further examined. There has to be some kind of reaction to that substance. In fact, I'm surprised a human managed to withstand the chemicals." Substance...

Flashes of neon blue swirled in my head. That's right. The thermos with the blue stuff. I had it. But then...what happened...ugh! Why can't I remember!

"Geez...you'd think you guys would be grateful that she wasn't smoked or disintegrated or turned into some kind of mutant!" What? That's Ben again but...what the heck was he talking about? Was he talking about me? Disintegration? Mutant? I'm pretty sure it's time to freak out, right?

"Look...her heart rate is going up." That's right. I'm about to go into cardiac arrest here thanks to Ben. Wait...new voice...no...that was Rook. "Can she hear us?" Thank you Rook! A dead silence followed, the only sound being that of my heart on the monitor. My fingers slowly flexed. Yes! Moving again...sorta.

"Perhaps...Rosalinda? Rosalinda, can you hear me?" The first time she called my name I strained to move, to speak. By the second time I had managed to force my eyes open. "That's good...though very strange." I squinted at the super bright light, it almost left me blind.

"Can somebody shut the lights off?" I said as I raised an arm to try to shield my eyes. I found that several needles and other stuff were attached to it.

"No. We need them on." I heard another voice, it sounded like it was bragging. I didn't really care though, my head was pounding and the light was making it worse.

"Ugh...I hope there's a black out...I can't take that light..." My voice sounds a bit hoarse and it took more strength than I thought to talk. It hurt.

"If the lights went out who would treat you, you ignorant girl?" I wanted to glare at the owner of that voice but couldn't even move my neck.

"Come on guys...just tune it down." Some arguing ensued with the annoying voice and a new one - it sounded a bit raspy and was definitely a man. How many people were in this room? The lights died down and I was able to take a look at where I was. Sort of...my vision was blurry. I didn't feel dizzy though. Oh...my glasses...

"My glasses...where are they?" I searched the room. It looked very high-tech, didn't look much like a hospital. I saw familiar faces - not clearly but I could see it was them. Both Rook and Ben had their eyes centered on my face. That made me a tad uncomfortable.

"Oh. They are right here." I saw Rook's form move and suddenly I felt cool objects being placed behind my ears. My glasses. He must've placed them on me. I adjusted them correctly and went to slide my legs off the...bed...or whatever I was on. It was harder than a bed so I don't think it was one. When I sat up - too quickly - my head started spinning and I had to grip it to keep myself from fainting.

"Ow...my head." I felt something beside me but didn't turn to see what it was.

"Well, with that nasty hit you took it's no surprise!" Again, the annoying voice. It sounded a lot like the British tone but with no accent...does that even make sense?

"Thankfully we were able to stabilize you and stitch ya up in no time." A groggy, slightly hoarse voice with an accent I can't put my finger on rang out. Okay, now I really want to know how many people are in h- wait! Stitches? Why would I need that? I turned, opening my eyes to find myself wishing I hadn't. I stared blankly at the two, small, grey creatures standing on a metal surface that I too was on. I felt panic rise within me and in a matter of two seconds I managed to jump, scoot backwards and fall off the metal table. And boy, what a shriek came out of my mouth. If I hadn't been so shocked I would've felt completely embarrassed.

"Woah! Take it easy Rose! Those are Galvans! They can't hurt you even if they wanted to!" My back hurts now too but I was pretty sure that was Ben talking. Sure enough I opened my eyes to see him kneeling down beside my sprawled form, legs hanging in the air against the metal surface.

"Galvans? You never said anything about those." That I can remember that is.

"I didn't think it was necessary. As a matter of fact I thought it was useless to mention them!" I felt two pair of arms grabbing me by the shoulders and forearms to pick me up. I let them.

"We're standing right here you know!" Annoying voice. When I stood upright I glance to the table to see the two little creatures - Galvans - put their hands on their hips. I noticed how bright the green from their eyes was. It really stood out from the gray coloring of their skin.

"No offense guys." Ben added afterwards - although he didn't sound like he meant it.

"Rose, are you feeling okay?" I turned to see an old man with a red, flower print shirt - actually, he remembers me of the chibi painted on the van that picked me up. Why has everybody taken to call me Rose?

"Uh...well, my head feels like it was hammered, but other than that I'm okay...I think." There was a nagging pain on the left side of my forehead but I didn't feel like worrying about it.

"Well, I'm sorry we couldn't meet under...better circumstances. I'm Max Tennyson." My eyes widened and I looked directly at him.

"So 'you're' Max! Finally! A name I recognize!" He chuckled at my exasperated tone. It was true. I was tired of being around so many strangers. Some more strange than others. He put a hand to my shoulder.

"Alright guys, I'm sure you've studied Rose long enough, let her get some rest. Come on Rose, I'm sure you will like to see where your room is." He started dragging me away.

"But-!" He interrupted one of the Galvans.

"You can keep testing her later." With that we exited the room. At first I thought we were alone so I was preparing to ask many questions, but I never got the chance to.

"Grandpa Max! Did they find out what was in that container?" I looked at the other side of Max to see Ben walking with us. Wait, so Max is Ben's grandpa? Small world.

"Yes, they have. Unfortunately it's not a substance any of us here at Earth have dealt with before so were waiting for some recruits from the Planet where it came from to get here." My eyes widened. I stopped causing them to stop too.

"Wait, is that...that thing, whatever it was, dangerous or something?" I should've asked if it was toxic.

"Honestly, to humans it's supposed to be very toxic." I tensed immediately when Max said that, I saw Ben snap his head to his grandfather with an incredulous face, as if he couldn't believe he had said that, "But, for some reason you seemed to be less affected by it's chemicals." I sighed in relief, but then straightened up.

"What does that mean?" I asked him as I walked forward to where they had stopped.

"That's what we're trying to figure out right now." I nodded quietly and followed them through various halls. Finally we stopped at one of the many doors in here.

"This is your room. Take your time with your stuff and make yourself comfortable. I'll send Ben or Rook here in an hour so they can show you around the place." Once again I nodded at them and sat down on my new bed the minute they were gone. Oh man...now I have even more questions.

Translations:

(1) "Oh, what have I gotten myself into?"

A little trivia here: Originally I was not going to post this. I had just gotten tired of seeing so many frigging RookxBen stories here! There are very little OCs so I decided to try out making an OC for the story. It was just for fun, but then I figured I could give it a try. Hope you guys liked it! :)

~ Merry Christmas! ~