A/N: Ok guys, this is my first M rated chapter. Enjoy and please review :)

Bruce was already in the lab the next morning when Perry sauntered in, a plastic cup in hand. She walked over to where he was bent over his microscope and plunked the cup down on the table. Bruce eyed it warily.

"For your sample," she said brightly.

Bruce's cheeks quickly flushed. "Um…do you need it now?"

"No, it's too early for that," winked Perry. Actually, it is never too early he thought.

"You can get it to me sometime today."

A few hours later, Bruce decided that the cup had tormented him enough. Picking it up off the table, he stalked silently out of the room, ignoring Perry who was watching him out of the corner of her eye. In his room he double and triple checked the lock on his door. It was definitely not a good time for Tony to walk in.

Rolling up his sleeves, he sat awkwardly on the edge of his bed. How did one just go about this? He had pleasured himself before, but the Other Guy turned him to a life of celibacy which included self-loving. Perry and Tony seemed to think that his heart rate didn't turn him into a monster, but he couldn't see past the undeniable evidence in front of him: his heart rate was elevated every single time he transformed. Perhaps he could take it slow and put the brakes on if things started getting to that breaking point.

"Um…JARVIS?" he asked hesitantly. "I have to come up with this sperm sample. Do you have any, um, videos to help me along?" His face was burning. The word 'porn' stuck in his throat and he prayed JARVIS understood.

"Of course, Dr. Banner," said JARVIS' smooth, non-judgmental voice.

The screen was soon filled with videos of nude, writhing women. Bruce scrolled through the options, flinching at some of the horrifying ones. Nothing was attractive; nothing was making the little guy cooperate. Settling on a relatively mild video of a dark haired girl with pretty brown eyes, Bruce tried to enjoy it. When the girl's fake, whiny voice got on his nerves, he muted the sound, but it made no difference.

Frustrated, Bruce turned off the video and flung himself back on his bed. Rubbing his face wearily, he groaned as he thought about the still empty cup sitting beside him. What had possessed him to agree to this? His mind immediately flashed to the memory of Perry, kneeling in front of him, her wide brown eyes begging him.

The little guy twitched.

Pushing experimentally through his thoughts, Bruce conjured up the first time he saw Perry, standing in front of him with her breasts straining against her Cardinals shirt and her bare legs exposed beneath the hem of her short shorts.

Twitch,twitch.

Slowly he sat up. "JARVIS," he said quietly. "Can you show me Perry?"

"Yes, Dr. Banner." Moments later, video surveillance of Perry working in the lab popped up on screen. Apparently she had removed her lab coat after he left, revealing her favorite outfit of shorts and a tank top.

Bruce gasped as he felt himself stiffen immediately. With trembling fingers, he worked open his fly, revealing his rock hard member. With his eyes glued to the screen, Bruce watched her every move as he slowly stroked.

Perry stood from her seat and stretched her arms high above her head. She was facing the camera, so Bruce could see just how her breasts pushed against the tight fabric of her shirt as her back arched. Letting out a small moan, he stroked faster.

Up, down, up, down….

Perry reached over to her ipod dock and turned up some music. Whatever she was listening to must have had a good beat because she began dancing around the lab, swaying her hips in time to the music.

His hand moved faster, sending waves of pleasure down to his toes.

Bending over to look at some data on a computer screen, Perry still danced, her rear end directly facing the camera, moving tantalizingly in the air.

Bruce's hand moved like a piston and deep, throaty moans were pouring out of his mouth. He could feel the pressure building up to the point of being unbearable.

Grabbing the cup, he put it in to position. Suddenly, Bruce roared with his orgasm, just as Perry looked directly at the camera.

Trembling, Bruce capped the cup and collapsed on the bed. What the hell just happened? Did he seriously just jerk off while watching Perry Stark in the lab? Throwing a shameful arm over his eyes, he asked JARVIS to turn off the video. At least the Other Guy didn't make an appearance.

A few hours later, Perry and Bruce were working quietly in the lab. Bruce was typing in row after row of numbers into his computer, while Perry was analyzing his sperm sample. She had just pulled the cup out again to extract a portion for the next round of tests when Tony made his usual noisy entrance into the lab. Perry rolled her eyes, glancing over to see Bruce pinching the bridge of his nose. Both of them had been enjoying the quiet atmosphere without Tony.

"Sooooo, what ch'ya working on?" He asked, throwing an arm over Perry's shoulder. Squinting, he picked up one of the test tubes she had just prepared.

"Put that down!" She snapped. "I will not tell you again, Tony: do NOT touch my equipment."

Tony snorted. "Hello, my lab, my equipment…"

"Your demise," she muttered.

Across the room, Bruce choked back a laugh.

"Don't get any ideas, Big Guy," said Tony, stepping around Perry and picking up the cup holding Bruce's sperm sample.

Perry bit her lip, hoping he would set it back down and move on. "Do you have a reason to be here or are you just trying to piss me off. Just a hint, that isn't going to work."

"I am pretty sure being in my own lab is reason enough to be here," said Tony, holding the cup up to the light. "What is this?"

Hazarding a glance at Bruce, she saw that his face was hidden behind a file. "None of your business," she snapped.

Tony wiggled the cup around, trying to get the substance to move. "Hmmm, what an interesting consistency. It reminds me of – "

Suddenly he dropped the cup onto the table as the realization hit him. "Whose is that and why?" he shrieked.

Perry didn't know if she should hide her face from embarrassment or laugh at his childish behavior. Glancing again at Bruce, she saw that his own face was now very red and very preoccupied with the pencil in his hand.

Unfortunately, this glance at Bruce did not go unnoticed by Tony. His face lit up with glee as he connected the two scientists' mortified expressions.

"Oh now this is good," He said, leaning forward to put his elbows on the table and to set his chin in his hands. "So whose idea was this and what are we hoping to achieve? Do we need other volunteers for this experiment because I volunteer."

Perry looked at him with a horrified expression. "You are a whole new level of disgusting, Tony Stark."

"Thank you," he smirked. "Now spill, I am dying to hear this."

Perry and Bruce remained silent.

"I've got all day," said Tony. "No one leaves this lab until you tell me."

Perry rolled her eyes. "If I tell you, do you promise to leave the lab right away?"

"Absolutely."

Sighing, Perry gave Bruce a questioning glance, which he returned with a consenting nod. "I am testing Bruce's sperm to see if the mutation can be passed on."

Tony took on a brief, serious expression. "That should yield some interesting results." Turning on Bruce, he walked over to where the doctor stood and clapped him on the shoulder. "But I am more curious about this man's sex drive."

Bruce rolled his eyes, but appeared to be otherwise calm. Only Perry noticed that his ears were still tinged in embarrassment

"So what is it that turns on a quiet doctor and occasional rage monster? Blonds? Asian girls? I bet the big fella likes some kinky shit – ow, ow, OW!"

With his back turned to Perry, he didn't see her come up behind him and grab his arm. Twisting it behind his back, she hissed in his ear, "I thought you were leaving."

"Ok, ok," he panted. "Unhand me woman! I am leaving."

Perry reluctantly released him. She was kind of hoping she would get to wrestle him out of the lab and pitch him unceremoniously into the hallway. Giving Bruce a we-will-talk-later wink, Tony swung out of the lab and headed up to his penthouse.

"I'm going to smother him in his sleep," muttered Perry angrily as she went back to her work area.

"I figured out which wires to cut in his arc reactor the first day I was here," said Bruce, cracking a small smile when Perry grinned up at him.

Upstairs, Tony was on a mission. If Bruce had managed to produce a sample, he must have had some 'inspiration'. To get said inspiration, he would have had to access JARVIS' systems. If he accessed JARVIS' systems, then Tony would be able to see just what it took to turn the good doctor on. That sort of blackmail information was too good to pass up.

"JARVIS," said Tony after he had poured himself a drink and settled on the couch. "Did Dr. Banner ask to see any videos today?"

"Yes," answered JARVIS politely.

"Show me those videos," Tony said, a smirk creeping up on his face.

"That would be an invasion of privacy, Sir."

"Just do it, JARVIS."

Complying with his order, JARVIS flashed the videos that he had shown Bruce up on the screen. For a few minutes, the video of the brown headed girl came up.

"Hmmm, well this is…boring," said Tony, frowning at the basic video. He definitely expected Bruce to prefer some of the wilder videos, like those involving two or three redheads and some interesting toys.

The video switched off and was quickly replaced with the surveillance video from earlier. Sitting up suddenly, Tony's eyes widened when he realized that the girl in the video was Perry. He watched as she stretched and danced around the room. When the video finished with Perry looking at the camera, Tony shook his head in shock.

"JARVIS, did Dr. Banner watch any other videos after this one of Perry?"

"No, sir."

Tony took a big swig of his drink and sat back to process this new information. So Bruce Banner was getting off on videos of Perry, of Tony's very own niece. He was supposed to be angry about this, right? Isn't that what uncle's do? Get all over-protective over their nieces, especially when it is their best friend who is jerking off to surveillance videos of her?

But Tony was the opposite of angry. He was happy, very happy. In fact he could laugh with relief. And that is just what he did.

He was still laughing when Pepper came in.

"What is so funny, Tony Stark?" She asked, standing over him as he rolled on the couch.

Jumping up, he kissed her soundly. "Pepper, the kids will be fine."

"What the hell does that mean?"

"Bruce and Perry! They don't need us to save them! They are going to save each other!" With that, Tony fell back onto the couch in laughter again.

Pepper, rolled her eyes. "I am going to pretend I know what you are talking about and I am going to take a long shower. When I get back, I expect you to have composed yourself so we can finish the evening like normal people."

Tony stopped laughing and watched her walk into the master bedroom, depositing clothes on the floor as she moved. "Need any help in there?" he called after her. Getting no answer, he decided to follow just in case.

Once again, Bruce found himself in the presence of Nick Fury as the director stared down an angry Tony Stark. This time, however, Perry was seated between the doctor and Tony, and Fury brought Agent Romanoff as back up. The air was tense and Bruce was resisting the temptation to shake Tony so the contest would end and they could move on with conversation.

Apparently Perry was thinking along the same lines because after a few moments she piped up, "Ok girls, I think we all know that Tony has the best hair, but Nick has the best tits."

Fury continued his one-eyed stare, but Tony snorted," Uh no, I totally have the better rack."

Perry rolled her eyes. Looking over Fury's shoulder, she spotted Agent Romanoff. "Hey, you are Natasha Romanoff, right?"

The agent nodded, unsure of where this was going.

"Holy crap it is so good to meet you," gushed Perry, jumping up to shake the woman's hand. "I am your biggest fan. Is it true that you can kill a man with your thighs?"

A bemused look crossed Natasha's face. "Yes I can kill a man with my thighs. I have done it on several occasions."

"You must teach me your ways," said Perry, looking at Natasha as though she was her new hero.

Bruce pinched the bridge of his nose and sighed. The image of Perry strangling a man with her thighs was threatening to take up residence in his mind, which he enjoyed more than he cared to admit.

Fury was apparently annoyed by this too. "Sit down, Miss Stark," he snapped, fixing his dangerous eye on the girl. "Now I don't know what this is all about, but I am getting tired of you all thinking you can storm your way up here every time you decide to play in information you shouldn't be getting into. "

Tony rolled his eyes. "I am pretty sure information involving me is something I should be getting into," he snarled.

Bruce cast him a concerned look. Tony's lapses in temper were happening more and more often. He wasn't sure that losing it on Director Fury was a good idea for anyone in the room, especially when the director had an assassin like Romanoff backing him up.

"What is going on," asked Perry, her face worried as she looked back and forth between Fury and Tony. Clearly she was as confused as Bruce about Tony's sudden decision to visit Nick Fury.

"Apparently Nick Fury was under the impression that his agents were so good at covering up alien attacks that I wouldn't notice when one broke in to my own goddamned home!" shouted Tony.

"What?!" gasped Perry and Bruce simultaneously.

"One of your little alien friends decided to show up at my house in Malibu and S.H.I.E.L.D. thought they would deal with it and not bother telling me."

"My agents handled it just fine," said Fury evenly with just an undertone of danger. "We were unable to capture the creature in time, but we secured the area."

Tony snorted. "It was the security that I designed myself that alerted you in the first place."

Perry wrinkled her brow in confusion. "Why would they come back? And why would they target Tony's place?" It was bad enough that the thing had showed up at her front door, but now they were showing up in other places, targeting her last relative. This couldn't be a coincidence. Where would be next? Stark Tower? Would they start going after her friends?

Fury sighed, and sat down across from Perry. "We are trying to get answers, I promise you. We are exhausting every outlet as we speak."

"Why not exhaust a few of my outlets?" asked Tony. "I have a rather impressive astrophysicist working in Stark Tower as we speak."

Fury gave an irritated sigh, clenching his hands on the table in front of him. "We have been over this before, Tony. I can't just go around picking up scientists because you like them. S.H.I.E.L.D. has the best of the best and they are doing their best to get answers." Slowly, the director stood to his full height, fixing his eye on each of them with a withering glare that would have weaker men needing a change of pants. " Now, I want you three out of my sight and if you bother me about this again, Mr. Stark, I will personally make sure my boot is so far up your ass that you chew leather for the next year. Do I make myself clear?"

"Crystal," snarled Tony, also standing and giving Fury his nastiest look. Without another word, he swung out of the room, leaving Perry and Bruce to catch up.

Lucky for Bruce, it was Perry who drove them home as Tony was having a full out hissy fit, which was only made worse by her sarcasm and biting comments.

"This is exactly why I told you to stay out of it!" Shouted Perry as she swung the car around one that seemed to be going the speed limit. Maybe it wasn't a good idea to have her drive after all.

"I case you haven't noticed, S.H.I.E.L.D. isn't doing their job," snapped Tony. "Seriously, they have made no progress and there has been another creature show up, so it wasn't an isolated incident. And they seem to be targeting us, but Fury can't figure that out."

"Oh please, Tony, you don't know what they have figured out. Did it ever occur to you that their new security system only allows you to hack into the unimportant information?"

Tony turned to his niece, his expression equal parts enraged and intrigued. Clearly the thought had not occurred to him. But before he could reply, Bruce thought of something that might help the case.

"Have they looked into the atmospheric disturbances in Florida?" He asked from the back seat, successfully shutting the other two up for a moment. Slowly, Tony turned to stare at his friend while Perry gave him a questioning look in the rear view mirror.

"There was an article the other day," explained Bruce. "Apparently there were some unusual atmospheric readings over a remote area in the Everglades. Not much more information other than that, but it was the second time the disturbances were noticed."

"When was the first time?" asked Tony.

"Just before Perry arrived here."

Tony's face lit up with a gleeful smile, giving Bruce the distinct impression that Christmas had come early for him. "I could kiss you," he said.

Bruce grimaced. "I would rather you didn't."

Tony's grin turned into a wicked smirk. "No, I will just have Perry do that instead."

It was Friday night and Pepper had managed to coerce Bruce into joining her and Tony for dinner in the penthouse. Generally he avoided going to the top floor, but Pepper could usually entice him to visit for something delicious that she cooked. Where Tony was narcissistic and flamboyant, Pepper was modest and friendly. She was the only person who could keep him in line, and everyone, including Tony, was thankful for that.

Now that he was up in Tony's living quarters, Bruce was painfully reminded of his last visit with the Other Guy. Looking around the living room, he could see remnants of the damage he caused as it was still being repaired. Tony didn't seem to mind the battle scars that Stark Tower had gained, begging Pepper to let him leave the Loki sized crater in the floor. Much to Bruce's appreciation, Pepper made him get it fixed.

The trio was just settling into dinner when Perry came in. Bruce quickly spit out the bite of steak he had just taken in an effort to prevent choking. The outfit that Perry was wearing was nothing short of marvelous. She was wearing a black dress that was very short, very tight, and had a very deep neckline. On her feet was a towering set of black heels, complementing her long, toned legs that Bruce loved to see. Around her neck was a long silver chain with a large emerald that dipped perfectly into her cleavage.

"Whoo-ee," whistled Tony as he kicked Bruce under the table. Bruce, who had been staring open-mouthed, let his eyes drop and he immediately turned bright red. "Where are you going all dressed up?"

Perry slapped on her wicked grin. "Thor is driving Jane crazy while she is trying to get some work done, so Darcy and I volunteered to take him out on the town."

"That should be interesting," muttered Bruce. He had never tested the theory, but he was pretty sure it would take about 10 times the normal amount of alcohol to get Thor drunk. And since he was a god who enjoyed getting drunk, Thor would probably drink whatever bar they chose dry.

Tony on the other hand matched his grin to Perry's. "Please tell me you will be getting video of this."

"I am already prepared," said Darcy, waving her camera as she walked in with Thor. Darcy had opted for a slightly more subdued, but no less sexy, snug blue dress. She had dressed Thor in a red tee shirt and dark jeans. Of course, he wore them like a male model, his clothes pulling tightly across his muscles.

"You guys can come too," she added. "I am calling up Steve once we get there."

"Oh, now that will be good. I am pretty sure Steve will have an aneurysm if he sees you two dressed like that," said Tony.

He's not the only one thought Bruce, still not looking up at the girls. The invitation was oddly tempting. Odd because Bruce was never really into going out for entertainment. Tempting because the last few weeks had awoken this sudden desire for life in the quiet doctor.

Bruce was pretty sure that bars and parties were created to ensure that all attendees make complete fools of themselves, something that he was not inclined to do. In college he had attended a few parties, but his favorite place to get a drink was a small corner pub that was quiet and relaxed. You definitely did not see girls dressed like Perry there. But considering his reservations about bypassing judgment and spending the evening making a royal ass of himself, Bruce found the offer much more tempting than usual. Living with Tony gave him a sense of normalcy, giving him the chance to consider goals and success that he abandoned with the Other Guy. But after Perry's arrival, Bruce's awareness of the possibility of life turned into a thirst for life. He suddenly desired the companionship, the popularity, and social ease that Tony had. He wanted to spend an evening out with friends, maybe even flirt with a pretty girl or two. It was a strange compulsion, especially considering that he had never felt this way, even before the Other Guy. For the first time, Bruce was finally beginning to feel alive.

Lost in his own thoughts, Bruce did not hear Tony politely decline for the three of them, telling the girls to have fun and to keep a close eye on Thor. Much to his dismay, Perry, Darcy, and Thor turned to leave, taking their invitation with them. Bruce stared wistfully after them.

"Darcy has already posted pictures of them on facebook. You can gawk at them after dinner," Tony said slyly, earning a reproachful shove from Pepper.

Bruce felt himself flush again. This whole red-face thing was getting old. "I don't think that will be necessary," he answered as smoothly as possible.

Unfortunately, Tony could read his friend like a book. "No, I suppose you won't need to refer to those pictures after the eyeful you just got," he said with the insufferable smirk he wore when he predicted Bruce's thoughts with unnerving accuracy.

Bruce opened his mouth with a nasty retort, but he was cut off by Pepper screeching," Tony Stark, you just earned yourself a night on the couch."