I don't know. You can blame boredom, I suppose. I really have no other explanation for this otherwise. And this was actually spawned from a Tony/Loki fan fic I was reading over on Achives of Our Own. And by a Hawkeye two-shot over on Lunaescence.

Oh, and I can't think on a title for this one.

Or, well, I can't decide on a title. As you have noticed, I tend to give my stories the title to a song that inspired me. Thing was, the idea just hit me and I was left with no title…

Disclaimer: This will be my only disclaimer. I don't own anything you might recognize in this piece of fiction other then Charlotte.

xXxXxXx

Charlotte Stark wasn't sure what role she played in both Pepper and Tony's life, especially after the two got together. Sure she was Tony's little sister-well, half sister-and grew up with Pepper and Tony both after she was born but what role other then sister and friend did she play in their lives?

Tony was wild, he was sarcastic, he was smart, he was handsome, he was…he was Tony. And Pepper…Pepper balanced Tony out, tried to help him become a better guy and eventually started to succeed-After he got the arc reactor in his chest and realized some things.

And after he had started to really care was when he had realized she was with S.H.E.I.L.D. and had gotten mad at her for not telling him. But she had simply told him that she didn't know what she was to either of them and anything he had to say was going to be ignored because this was her decision and she didn't need her big brother telling her what she could and couldn't do.

Charlotte was going to continue contemplating her relationship with the both of them and leave when she suddenly got a message from Fury.

She furrowed her brows in confusion, eyes narrowed and turning her attention away from the person she was assigned to protect and to her phone. Now what could the man want?

"Hello?" she allowed the confusion to leak into her voice, getting up from her spot when she noticed a piece of paper underneath her drink. Go somewhere that gives you privacy. was all it said.

"There's been a development with the Tesseract. Loki, brother of Thor, has come through it and turned a bunch of our men into his slaves. We need to stop him and I need you and Coulson to give information on this and the Avengers project to your brother. Got it? Good. I've already sent someone to replace you, now go meet Coulson at the jet." the call ended almost as soon as it was started and it left a feeling of dread tickling at the back of her mind.

The God of Mischief having the Tesseract in his hands would not end well, she already knew as she slide the phone into her pocket and left the café.

Especially if that meant that Fury was trying to assemble the Avengers already.

And as soon as Charlotte had gotten to Coulson and they were in the air, everything was explained to her and it only made her dread grow.

She knew Tony had thought of the Avengers as a joke when she had mentioned it to him. He had still thought of it as a joke when Fury himself told him about it in more detail then she.

But this team needed to be assembled. She knew that, Coulson knew it, Fury wouldn't have said so otherwise.

And that meant getting Tony on board. Whatever the costs, but with Pepper there and Tony softening up for her…she knew it was going to be a little easier then before. But not by much.

She scanned the pages that she was presented with. Captain America was involved because he knew about the Tesseract already, knew the power it held. Tony was being invited because he was a genius, no matter his attitude or character. And Banner…Banner was brought in because he was just as smart and knew about gamma. He and Tony would be able to work together to track it.

There were more things in their profile but her mind was already buzzing on why Loki would steal the Tesseract and turn such loyal agents and scientists into his slaves.

The only thing that seemed logical was that he was going to try open a portal to someplace. But why, was the better question. Was he going to start war with them? Fury seemed to think so. And maybe that was the only reason why he stole it but from what she had read from Norse mythology…

She didn't know. She honestly thought Loki was kind of like Tony, actually. Lost, broken, misunderstood.

She knew he had felt betrayed when he found out he was not Odin's true son. That he had been adopted, but she thought the true blow was when he realized he was the son of a Frost Giant, that he was Jotunn.

She let out a sigh, letting the papers down and getting up with Coulson to exit the jet.

"I hope Tony listens to what we have to say, at least." she muttered. "He never liked S.H.E.I.L.D in the first place, I think he likes us even less since he found out you were with us." Coulson chuckled.

"Protective older brothers. Any would overreact to realizing their younger sibling is grown up, I suppose." she shrugged, sharing a smile with him.

"Especially if that younger sibling was involved with S.H.E.I.L.D.," he said dryly.

After that, there was only comfortable silence until they arrived at Stark Tower, both of them getting out and using her status as Stark to get access to the building.

"Ah, Charlotte. It is good to see you again, may I ask what the occasion is?" JARVIS inquired politely. "Hello, JARVIS. We've come to see Tony with official S.H.E.I.L.D. business. Can you alert him?"

"Certainly,"

"You being a Stark comes in handy when dealing with him sometimes," Coulson commented lightly. "Being a Stark always has it's benefits, it just depends on the person." she smirked.

"I am sorry, he is busy at the moment. He suggests coming by tomorrow." JARVIS stated, making Charlotte sigh. "Tell Tony he'll see us now, JARVIS."

"But he specifically-"

"We'll be taking the elevator. Alert Stark, please." Coulson said, interrupting JARVIS as he and Charlotte made their towards said elevator. "Business hours are clear, he has stated that you may come back at 8am."

"Yes, well, sorry for the inconvience then, JARVIS. But this is important," she replied mildly, watching the numbers as they climbed higher and higher towards the penthouse.

"He will be very displeased, Charlotte."

"I realize that, but thank you for the warning." she smiled warmly, knowing JARVIS would see. She missed the little things here, talking with JARVIS or helping Tony in the lab, maybe even helping Pepper with business or just inventing something of her own with the background noise being AC/DC and Tony working across the room.

And how long it took JARVIS to stop calling her Miss Stark or Madam. She literally had to go into his system and change it.

The elevator doors opened and Coulson walked out before her, intent clear in his steps as he interrupted Tony and Pepper.

"Security breach." she heard Tony say sarcastically as soon as he noticed them.

"Mr. Stark."

"Phile, Lotte, hi." Pepper smiled at them, getting up from her seated position to hug Charlotte. "Hey Pep, it's good to see you too." she grinned at her, directing it at Tony next. "Why don't you sit down and join us?" Pepper added.

"We can't stay," Coulson cut in quickly.

"Ah, his first name is Agent," Tony said, pointing briefly at Coulson before directing his gaze to her. "So why are you two here?"

"We need you to review this over." Coulson said, offering him the files they had with them-information on the Tesseract and the Avengers. "I don't like being handed things," Tony said, giving it a glare as though it were evil. "Tony, don't be difficult right now," Charlotte sighed, grabbing the wineglass out of his hands.

"Well, that's fine because I love to be handed things so let's trade." Pepper said brightly, trading her wineglass for the files before handing Tony the files and taking the wineglass from her. "Thank you,"

"Official consulting hours are between 8 and 5 every Thursday"

"This isn't a consultation," they both said, clearly annoyed at his behaviour.

"Oh, is this about the Avengers?" Pepper asked, giving the files a new look before smiling sheepishly. "That I know nothing about."

Tony let out a sigh, turning his back on them both and going over to the desk, saying "The Avengers idea was scraped, I thought. And I'm really over it…"

"I didn't know that either."

"Yeah and apparently I'm ballitale, self-obsessed, play well with others."

"That I did know,"

"Miss Potts, will you come here please?"

Pepper gave them a shrug and easy smile, as though she were saying 'Oh well,' before going over to Tony.

She turned to look at Coulson, feeling his gaze on her. "Not feeling very talkative?" he raised an eyebrow at her, the both of them trying to give Pepper and Tony as much privacy as they could without leaving the room.

"I feel a little awkward, that's all. It's been a while since I've seen Pepper or Tony, let alone walked into a place I, technically, own." she muttered, taking the wineglass from Coulson and taking a sip of it. "He and Pepper own the tower," he replied, eyeing the decorations.

"My last name still happens to be Stark," she said dryly.

"So any chances you two are driving by the airport?" Pepper asked, walking towards them and drawing their attention to her.

"We could drop you off, sure."

Charlotte watched as Tony lifted his hand in the background before waving the his comment away and turning back to the screen in front of him at Pepper's words. "Fantastic."

Charlotte let out a sigh, rubbing at her forehead as Pepper and Coulson stepped into the elevator, "I'll see you in a bit, Tony." she called before leaving with the two, allowing Pepper to ask questions and Coulson answering them as much as he could.

Hopefully she wouldn't feel as awkward around Tony or Pepper soon. It felt…strange, getting a positive response from Pepper but otherwise being ignored by her own brother.

Maybe she should have spent more time with Tony instead of avoiding him after telling him off. Maybe then she wouldn't feel so…

Ignored.

xXxXxXx

Actually, I believe this is more of a tester fiction, if I'm going to be honest with myself. Which is probably the reason why I have so many In Progress stories so far. I get to curious about things sometimes.

And I've been getting some pretty positive feedback on all of them, so I thought: Why not do this?

And for being curious.

Have you ever read a fan fiction with a character like Charlotte in this section? Because I've read stories where Tony has a sister but she's pretty much the female version of him or Pepper if she had different hair and eye colour and was related to him. Maybe even Pepper's cousin or sister that couldn't stand him.

Your reviews will be gratefully appreciated. No matter what they say.(Still can't decide on a title…maybe Stereo Hearts?)