Disclaimer: I don't own anything, save for my OC's.


Title: Wild Waves

Fandom: Avengers

Genre: Action/Family

Characters: Tony Stark/Iron Man

Rating: T

Warnings: Cussing, suggestive themes, adult/teen humor.

Summary: Sisters Kenzie and Relina Stark were planning on having a normal, fun summer. No having to help take down bad guys after them, no having to worry about being hassled by people - just several weeks of rest and relaxation. However, fate has other plans in mind, for these two, when SHIELD calls them in, saying there's a Norse God on the loose, trying to take over the earth. Great - time to suit up.


Prologue

October 5th, 1997

'It's for the best,' he tried to convince himself, staring at the road in front of him. 'You're doing this for your girls…they'll be fine…it's for the best…' He kept repeating it in his head, trying to make it seem alright. It wasn't like he was just leaving them at an orphanage or anything. No, no, he would never do that – not to his children. He was leaving them with family – family that could take care of the girls, while he could not. Granted, family he hadn't seen or spoken to, in six years…but, still, family.

They would be a lot better off with their uncle. He himself may not have been able to support all of four of them – but his brother would be more than able to support two of those kids.

It was a hard decision – trying to figure out which of the two to give a better life to. After all, how could you choose to send away two of your children, giving them a chance at a good life, while you kept one of them, and only gave him what you could for a life? Somehow, in the end, he had chosen to send his girls off. His son would be fine with him – he and his son had the same interests, same simple view of life. And his son had always wanted to follow in his footsteps – and what better way to do that, then by first-hand experience? His daughters, on the other hand, would have been better off with their uncle. One was already enough like him, in personality, while the other was fascinated by technology. Their uncle would be able to help them grow into great people, help them achieve their potential…a lot better than he, their own father, could ever do.

He looked in the rearview mirror, at the three slumbering children in the backseat. His son had his drooping by his left shoulder, one of his toy trains still in his hand. His oldest daughter had her head pressed against the door window, and was blissfully snoring, and his youngest daughter had her head somewhat bowed, and her blanket somewhat falling. He would have to fix it before he got them out of the car…

Smiling sadly, he broke his gaze away from their reflections, turning his attention fully back towards the road ahead. It only took a moment more to see the location he and his brother were supposed to meet up at; a lake that was usually abandoned at midnight, around these parts, save for maybe a kid or two every now and then. It was the perfect place for the both of them to meet up, when both brothers were trying to avoid the paparazzi. He turned to head for the parking spots, trying to spot his brother's car. Headlights flashed on just as soon as he turned, signaling that, for once, his brother was actually early. He parked his car in the spot next to the other car, pulling the key out of the ignition. He opened his door, as his brother jumped out of the driver's seat of his own car.

"Nathan, bro, what's it been, six years, now?" the man greeted, casually, holding a McDonalds take-out sack. He held it up, showing it to his younger brother, shaking it. "Want a fry?"

Nathan shook his head, trying to keep him from rolling his eyes. "No, thank you, Tony," he replied. "I ate before I came here."

Tony shrugged. "More for me, then."

Silence filled the air for a moment, while the elder of the two pulled out a couple of fries from the bag, munching on them. "Listen, Tony, I want to say thank you," Nathan finally said, breaking the silence. "Thanks, for everything."

The older brother shook his head. "What's family for?" he reminded him, before looking at the car. "Alright, you get your girls out, I'll get their stuff." He sat down his bag in his car, going over to the trunk of the younger brother's own vehicle. "It's back here isn't?" Nathan nodded his head in reply, before opening the door that his middle child was using as a pillow, making sure her head didn't fall.

"You have car seats, right?" Nathan called out over his shoulder.

Tony looked back, two suitcases in his hands. "Uh, yeah, of course I do."

"Just checking," the younger of the two muttered, unbuckling the girls out of their car seats. He scooped up both of them into his arms, balancing them off of each hip. He bounced them each a little, in attempt to get them to break free from slumber. "Girls, wake up – it's time to get up. We're here."

He already informed all three of his children that the two sisters were going to be staying with their Uncle Tony, for a while – though, he didn't know how long 'a while' might actually be. It took a minute or so more, before he heard his youngest yawn, and his middle child yawn, "I'm up, Daddy…I'm up…"

Nathan sat both girls on the ground, checking just once to see if they were actually standing up our about to droop down to the ground, in attempt for sleep. He knelt down looking at them, placing his hands on their shoulders. They both had their eyes – the younger having blue, the older violet - slightly closed, the younger of the girls, a small blonde toddler with her hair in pigtails, rubbing her eyes, tiredly, and the older, a brunette with wavy hair hanging down, slightly yawning, trying to keep her balance. It would be harder than he thought to see them go away, and not seeing them every-day, like he did already. "Listen to me," he said, gently. "I want you both to behave for your Uncle Tony, okay? Do your best to stay out of trouble. And Kenzie," he directed his attention at his oldest. "Look after Relina," he glanced back and forth between the two. "Look after each other, and keep each other safe, alright?"

"M-hmm…" Relina mumbled.

"Okay, Daddy…" Kenzie agreed.

He hugged both of them, tightly, placing a kiss on the top of their heads, before breaking apart from them. He saw the rest of the scene unfold, numbly; his brother escorted the two to the car, buckling them in, before he himself bid farewell to his brother, and jumping into his car. They drove away, Tony and the girls waving back at Nathan, before going out on to the road. Nathan waved back at them, watching them until they disappeared from sight.

He could only hope Tony knew what he was doing...


March 23rd, 2007

Sitting on the roof, with your earphones in your ears, letting the music take over your thoughts, as you stared up at the clouds above...that was how she always managed to find serenity. With days beginning to become nicer and nicer, with Spring setting in, the now fourteen year old Kenzie Stark was able to actually able to sit out on her rooftop, and find peace again, instead of sitting stuffed up in her room. Malibu wasn't usually too cold in the winter - but, then again, the teen hated any sort of cold weather and temperature, period.

She let out a sigh, closing her eyes for a moment. The past couple of days had been completely exhausting for her - but, really, it was understandable as to why. Not because of meetings, not because of parties or anything of the sort. It was something else entirely...something she was trying to keep hidden and under her control. Which, was going well...

...Sort of.

Alright, so she hadn't completely gotten this little secret of hers under control. But, at least Tony, Relina Pepper and everybody else hadn't noticed yet. The only one who would have seen the mishaps was JARVIS, and she was able to make him keep it under wraps. Thank God for him being an AI. You tell them to keep his mouth shut - you tell him to do pretty much anything (as well as knowing how to override certain things...) - he listened and did as told.

It made her understand just why her little sister was so into robotics.

It had been...what, nine, ten years, since she and Relina had moved in with their uncle? That seemed about right - though, it felt like they had been there their whole lives (which, they practically had). And ever since they had moved in, Relina had been fascinated by the technology, robotics and weaponry that Stark Industries produced. She loved seeing how they worked, how to build them, everything. Her sister on the other hand...

Well, she was more of an artistic person, than a mechanic.

Miss Stark? Kenzie jumped up, snapping out of her thoughts.

After a second, she let out a sigh of relief. Oh, it was just JARVIS...hacking into her MP3 player...again. "Holy shit, you scared me," she breathed, fixing her sunglasses so they weren't falling off of her face. "What is it?"

Your Uncle requests your presence downstairs. the AI informer her. You have company that wishes to see you.

Kenzie got to her feet, blinking once. "Who the hell wants to see me?"

A Professor from a school in Bayville*, New York. JARVIS responded. Charles Xavier.

.

.

.

"You needed to see me?"

Tony looked up from his conversation with the man in front of him; a bald, older gentleman, wearing a dark green turtle neck, a pea green jacket, black pants, and black loafers, sitting in a wheel chair. The man smiled at the teen, moving up to her. "McKenzie, hello," he greeted, as he got closer to her. He stopped to where he was sitting right in front of her, and held out his hand. "Pleased to meet you, I am-"

"Charles Xavier," Kenzie nodded, shaking his hand. "JARVIS filled me in, on who you are, Professor - it's nice to meet you, too. And, please, just call me Kenzie - everybody else does."

The Professor nodded, as they broke apart the handshake. "Now, Kenzie, I know you are wondering as to why I am here," he started. Kenzie nodded her head, stuffing her hands in the pockets of her jeans. "As you know, I run a school in New York - the Xavier Institute for Gifted Children. It's a special school for...people like us."

" 'People like us'," Kenzie repeated, raising a fine dark brow. "Which means...what, exactly?"

"Carriers of a genetic called the X-Gene," Charles explained to her. "Gifted people - people with abilities. Mutants."

'Yeah, that's what every girl wants to hear, Doc,' Kenzie thought to herself, staying silent. 'Mutant.' Wait a second...people with abilities...

Oh, shit...

He knew.

"I know," Charles agreed, smiling knowingly.

Wait, did she say that out loud?

"No, you did not," he added, causing her eyes to widen. She opened her mouth to speak - to ask how in the hell he knew what she was thinking - but he waved his hand. "I do not mean to intrude, I apologize," he told her. "But, I wanted to prove to you that you aren't the only one with abilities...and that none of this is being made up."

Tony stood up, looking at them. "I'm sorry, but what am I missing here, exactly?"

Charles looked over at the still stunned girl. "I see you haven't informed your Uncle, yet..."

"Only one who knew was JARVIS." she replied, bluntly. Tony gave her a look, asking just what the hell she was talking about, before she sighed, looking down at the floor. "Some...weird stuff has been happening to me these past couple of days, Uncle T," she explained. "I don't know how they happened or why, but, for some reason," she held up her hand, deciding a demonstration would be good - if she could do it... Concentrating, closing her eyes tight, she imagined heat - she tried to think of it and -

Szzt.

Opening her eyes, Kenzie looked into her palm, seeing a small flame resting in it. It didn't burn, it didn't hurt - it just felt warm. She never had any scars or burns from whenever the fire would appear, over the past couple of days. It would just appear, and she couldn't feel anything from it, except warmth radiating from it. Tony's eyes widened, and she quickly closed her palm, before he could rush to get a fire extinguisher.

"How did you do that...?" Tony asked, grabbing her hand and looking at it, looking for signs of it left. None, though.

Kenzie shrugged. "I don't know, it just...happens."

"She's pyrokinetic," Charles informed them. "Able to generate fire, possibly even control pre-existing flames." The two Starks looked at him, before looking at each other, concerned, confused. "Kenzie, I came here in hopes that you would come to my school - there, you would be able to learn how to control your powers, further your ability, in peace. But, only if you wish to."

Pause.

"Sign me up," she finally decided, confidently, looking up at him.


January 18th, 2008

Swoosh. Woosh. Crash.

Relina bit her lip, staring at the waves that lay before her, her hands in front of her. Bending and unbending her elbows, curling and uncurling her fingers, the waves would follow suit - moving in to the shore, or moving away. It was just something basic she could do - she only discovered she could do it this morning. But, she knew what it meant. Her sister had elemental-based powers, as well - only, hers was solely fire-based. Hers allowed her to control water.

But, she had to wonder if migraines came with this particular ability or not. Or if had to do with any powers setting in...

Letting out a calming breath, she slowly dropped her arms to her sides, letting the waves return to their normal flow. Well, she got in some practice - she could at least tell that to whoever would be sent from Xavier's to go see if they could get her to join the team. Well, if they sent anyone. According to her sister, though, they had some sort of technology that enabled them to find mutants - and alert them when one developed their powers.

So, hopefully, they would come.

She turned on her heel, and went to start walking, only for her heart to stop, for a moment. Taking in a deep breath, she looked around - she knew somebody was there. She wasn't entirely sure how she knew, but, she felt like she could hear somebody. "Who's there?" Relina asked, cautiously. "Uncle Tony? Pepper?"

"Wrong-o," she looked up, seeing, in a blurry moment, someone appear right in front of her, making her jump back. Relina looked up at who had been standing just inches away from her, seeing a boy, a couple of years older than her, with white hair, and dark blue eyes, smirking at her. "Hey there."

She crossed her arms, trying to keep her composure. "This is private land," she informed him. "What are you doing here?"

"Looking for someone," he told her, cockily. "A little mutant who messes with water - and it looks like I found her," in a flash, he was gone, and standing right next to her, looking her over, causing her to widen her eyes. He was a mutant too, wasn't he? "Reliena, right?"

She frowned. "It's Relina," she corrected. "Reh-lee-nuh."

"Eh, potato, potato," the boy scoffed, going to stand back in front of her. "I know what I need to know."

The blonde raised a brow, curiously. "And that would be...what?"

"You, sweetheart, are a mutant," the boy told her. "Water manipulation, and telepathy, according to the boss lady. Pretty good. Nothing like my powers, but, whatever, they're still pretty useful. And, you're Wildfire's little sister." Wildfire...since when did her sister go by that? No, wait, hold up...telepathy?

Relina shook her head. "I can only control water," she informed him. "I don't have...telepathy or whatever."

"Oh, you don't?" the boy challenged. "Go ahead; try and see what I'm thinking."

The blonde rolled her eyes, and closed her eyes, trying to concentrate on what he was thinking. Okay, this was pointless, he was mocking her, or some- 'OH MY GOD!' her eyes snapped open, her cheeks flushing to a bright red coloring. Was he seriously thinking that about her? A flirtatious smirk appeared on the boy's lips. "I told you."

"Who...who are you?" she demanded, her voice coming out an octave higher than she would have preferred.

The white haired boy opened his mouth to speak, only for a fireball to go flying past both of their heads. They both spun around, looking up, seeing-

"MAXIMOFF, GET THE HELL AWAY FROM MY LITTLE SISTER, YOU CHUMP!" Kenzie demanded from her spot several yards away, her fists ablaze. And her expression was livid. "OR I SWEAR, THE NEXT ONE'S GOING TO BE AIMED AT YOUR BALLS!"

'Maximoff' grinned, before doing something all three of them knew would get him turned into barbecue, real fast. He grabbed onto Relina's butt, giving it a firm squeeze, causing the younger girl to jump away and let out a 'ACK!' in surprise. Kenzie growled, while the boy ran off, at top speed. "CATCH ME IF YOU CAN, STARK!"

Kenzie threw the fire balls in her hand at him, only to have missed. "Damn..." she muttered, before turning to her sister - who was frozen in place, her face crimson red. Worried, the brunette ran over to her sister, placing her hands on her shoulders. "Are you okay?"

"Yeah, I think so..." she breathed, glancing around. "Just who was that?"

"A pervert from the Brotherhood, that's who," Kenzie replied, massaging her head. "His name's Pietro Maximoff. And he's somebody you don't really want to ever get to know. Like, ever."

Relina shook her head, trying to get the red in her face to go away. "So, did the Professor send you?" she asked.

Her older sister nodded. "Yeah, him, and a couple of my friends, Jean and Scott, are up at the house," she replied. "They're talking with Tony and Pepper, right now, about making arrangements for you to come to the Institute - if you want."

The blonde smiled. "Of course."


May 2nd, 2008

"What do you mean he's been kidnapped!?" both sisters chorused, staring at the screen in front of them. They were sitting in the Professor's office, at his computer, video-chatting with one Mr. Obadiah Stane; their uncle's business partner, and family friend.

Obadiah sighed, shaking his head. "I wish I could tell you differently, but, it's the truth, girls," he explained. "Tony went over to Afghanistan to go visit the troops, show them some new equipment - he went on a ride with some of them, and they got attacked. Most of them died, but, from what I can gather, Tony's been kidnapped by their attackers; I don't know if he's still alive or not though..."

"How many people do you have looking for him?" Relina demanded, hands gripping onto the edge of the desk.

"The men over there are doing everything they can to look for him and his captors," Stane informed them. "And we've got some of our security looking for him, to see if he somehow managed to escape."

Kenzie hugged herself, looking distraught. "We have to go find him, Obie," she exclaimed. "What if they don't find him in time? We might actually-"

"Out of the question, you two," Obadiah insisted. "Absolutely not. You are to stay at that school."

"Why can't we go looking for him?" Relina demanded.

"Because, we already have one Stark that's MIA," he told them. "We don't need two more doing so, as well. Now, you girls go back to studying, and I'll call you when we get more news, alright?"

"But, Obie-" too late. He had already exited out of the video chat. The two looked over at each other, frowning.

They both knew that, with Tony absent, both Obie and Pepper had control over what they did. And there was no way either of them were going to allow the two to leave Bayville, to look for their Uncle. Hell, Professor X, Logan and Ororo would both do everything in their power to keep them from trying to even track down their uncle, saying it would be too dangerous for both of them.

They were screwed.


One year later

Tony was alive.

He was safe.

He had escaped.

He came home.

They had their uncle back.

All should have been as good as gold.

Things...they weren't the same though. All three members of the small family doubted things would ever really return to normal. Not with everything that had happened, over these past several months.


June 4th, 2012

Fury stared at the two files that had been placed on his desk. The two other choices...the two remaining people he had to decide whether or not they could help with this rising threat. Both of them had developed their powers over the years - learned to control them. Learned to properly fight using them. And with their kind of powers, they might make a good part of the back up plan; the reactivated Initiative.

But, then again, given who they were...could he really handle dealing with all three of the Starks?

...No, he didn't really have much of a choice, here. He needed everyone he could get his hands on, on this mission. And they might actually prove useful...despite one of them having a very similar personality to that of her uncle...

"Agent Hill," he called out. After a moment, the Agent appeared, nodding her head. He picked up the files, tossing them to her. "I need you to go track down these two."

"Yes sir." she agreed, before walking away with the files, studying them.

McKenzie B. Stark

Codename: Wildfire

Mission Qualifications: Possesses the ability to generate and manipulate fire. Skilled to an extent at hand to hand combat, and has had some training in capoeira.

Relina M. Stark

Codename: Wavelength

Mission Qualifications: Possesses both the ability to manipulate water, as well as the power of telepathy - able to drown enemies, as well as get into their heads. Skilled to hand to hand combat to an extent.


And that's it for the prologue, I guess. I got lazy towards the end, I know - but, hey, I couldn't be bothered to give away everything, when I'm planning on doing a couple of prequels. One for their days in the X-Men, one for Iron Man and another for Iron Man 2.

*Bayville thing - yeah, I did X-Men Evolution. I've seen crossovers of it, and it's been so damned long since I've seen the movies (save for XMen Origins Wolverine), I just went with it.

The next chapter should hopefully be up soon, before the week is over. And if I don't get it up tomorrow, I wanna wish you guys a Merry Christmas/Happy Hanukkah/Happy Kwanzaa! :3

Also, I have a tumblr up for my two little Stark sisters. The url for it is up on my profile, and I hope to hear from you guys on there!

Thanks for reading, and please leave a review, because they make nice Christmas presents for me haha! :3

So, til next time, arrivederci!