A/N Okay, first things first: I don't own Super Paper Mario, or The Avengers. If I did, then this would be a movie by now :)
I think I need to explain something real quick. In this fic, the Avengers are all together, except they never met Thor and Loki, or Coulson or Fury. And this is going to follow the basic plot from the game, but I'm gonna ad a few twists and surprises... If you have and ideas or questions, just let me know, and please review!
StoryGirl.98

"So, today's pretty boring so far," Tony said, taking a sip from his cup of coffee. Steve just nodded in agreement. They were both in the Stark Tower break room, waiting for something to go wrong in the world. But no matter how bored they got, no aliens invaded, no evil gods tried to seize control of the world, and no genetically mutated monsters were threatening New York.

"I kinda wish something would happen. Y'know, just a 'bam!' from out of no where," Steve said, looking up from his news paper. Before Tony could respond, Clint ran in, an anxious look on his face.

"Natasha's been kidnapped!" He yelled at the other two, even though he was only a few steps away from them.

"Calm down, Clint. We'll get her back, if she doesn't manage to escape on her own first," Steve said coolly, "Now, who kidnapped her, and how do you know she's been kidnapped?" Clint took a seat, and started to explain.
"I don't know who, but she's gone!" He said, his words coming out in a frenzy. Steve and Tony exchanged a glance, and Tony smiled mischievously. Poking Clint on his shoulder, he started to tease him.

"You like her."
"No I don't," Clint said, avoiding the obvious, "I just am con-" Tony cut him off.

"Yes you do!"
Steve rolled his eyes, stood up and walked to the sink and put his cup in it. Turning back to his friends, he began to take charge of the situation.

"Tony, stop teasing and get suited up. Clint, go get your crossbow. Meet in the lobby in ten minutes, and then we'll go get Bruce," He said as he walked out the door to get his shield.

"Don't worry, Prince Charming, your princess will be here in no time," Tony told Clint, heading out the door to get his suit.

Bruce tried to steady his hand from shaking, and carefully set the beaker down. This project was getting on his nerves. If he did everything right, he might be able to get rid of the Hulk once and for all, and be able to be reunited with Betty. If he did anything wrong, however, there's just a slight chance that he might explode.

Pushing those negative thoughts out his mind, he decided to take a break. He leaned back into his chair, grabbed his notebook, and began to doodle in it when he heard his door open.

"What are you guys doing here?" he said, without looking up. He knew it was the other Avengers, because they were the only other ones who knew where he lived.

"We need your help," Steve said.
"With what?" Bruce said, still not looking up.

"Natasha's been kidnapped!" Clint cut in. "We don't know who did it either. She just disappeared off the face of the earth."

Bruce laughed to himself. Clint was the most level headed guy he knew, but the second Natasha is in danger he turns to a nervous wreck.
He stood and was about to tell his friends he wouldn't go, when suddenly a bright light flashed in the room. As soon as it appeared it was gone, but it left something behind.

"N-Natasha?" Steve said with disbelief. She was standing there in the middle of the room, which had been empty a moment before. She tried to say something, but it sounded as if her voice was muffled. Clint tried to walk over to her, but some unseen force knocked him back.

"They can't hear you, Miss Romanoff," said a voice, from no one in the room. A flash similar to the first one occurred, this time leaving behind someone none of the Avengers had met before. He was tall and thin, with black hair, light blue eyes, and pale skin. In one hand he he held a brown staff, that had a purple jewel at the top.

"Who are you?" Tony cut in. He didn't think this was going to end well, for some reason.

"Me?" the stranger said, amused, "My name is Loki Laufeyson. The chosen executor of the Dark Prognostics, soon to be the destroyer of all realms, do you wish for me to continue?"

"You've said enough. Now, release my girlfri- I mean friend right now!" Clint said.

"Never. This girl, and a few undetermined others, are integral to fulfilling the prophecies. Once I find people who match the descriptions in the Prognostics, I will take them to Jotunhiem, and use them to destroy all worlds," Loki said with a smile.
"Destroy all worlds? What do you mean by that?" Tony said.

While Loki was distracted with the others, Steve reached for his shield, and flung it at the stranger. As soon as it was about hit Loki, it paused in midair, and then fell to the floor. Loki then snapped his fingers and a blast of black energy flew and hit Steve, knocking him unconscious.

With another snap of his fingers, a small portal that began to pull everyone in the room except Steve into it. As soon as he arrived back in Jotuhiem, Loki smiled to himself. His preparations were now in order, and he believed that the four mortals he took from Midgaurd were the ones he needed. He just had a few more details to attend to, and the the end of all the realms would be swift and easy.

"Steve Rogers?"

Steve let out a groan, and stood up from the floor. Looking around, he confirmed four things. He was still in Bruce's house, the others were gone, he had a horrible headache, and he wasn't alone in the room.

There was a girl standing in front of him. She was a little bit short, and had long platinum blonde hair. She wore a white shirt and jeans, and a strange necklace that was in the shape of a butterfly, with all the colors of the rainbow in it. She appeared to be in her early twenties, and she spoke again.
"Are you Steve Rogers? Alias Captain America, member of the Avengers?" She said, to the point.

"Uh, yeah," Steve said cautiously. He was still a little confused from the recent events.

"Good. I have been sent to find you." Hearing this, Steve grabbed his shield, just in case if this girl was an ally of Loki. As if reading his mind, she took a step back.

"N-no, I am not an enemy. My name is Tippi, and I work for S.H.I.E.L.D. Your friends, Anthony Stark, Bruce Banner, Clint Barton, and Natasha Romanoff, have been kidnapped by a man named Loki, correct?"

"Yes. What's going on? He said he was trying to destroy realms or something?"

"It will be explained soon. But for now, you need to come with me."

Tippi reached over and grabbed Steve's hand, and in a moment they were in an entirely different place.

They were in a large office building. There were a few other people around, and surprisingly, they thought Tippi and Steve's sudden appearance was normal.

Releasing his hand, Tippi motioned for Steve to follow her. They headed down a maze of hallways, Tippi ignoring Steve's numerous questions. After walking for a few minutes, they walked down a long hallway and arrived at a dead end. Tippi flipped a nearby light switch, and a panel on the wall opened up. She placed her hand on it, and it scanned her hand. A secret door opened up, leading to an elevator. After going down a few levels, the doors opened up to a large room.

It was mostly empty, except for a few computers on one side of the room, and a table and some chairs on the other. Besides Steve and Tippi, there was only one person there. He was at the computers, looking over some files.
"Agent Coulson? I found Rogers," Tippi said, walking over to him. When he heard this, Coulson immediately stood and turned around, and extended his hand to Steve.

"Hello, I'm Agent Phil Coulson."
"Can you please tell me what's going on? She wouldn't answer any of my questions," Steve said after he shook Coulson's hand.

"He told me to not to," Tippi said in her defense.

Coulson lead the way to the table on the other side of the room, where the trio sat down.

"What's going on is that there is some one, Loki, you met him earlier, and he is trying to destroy the realms," Tippi said.

"Who is Loki? And what is a realm?" Steve asked.

"Loki is a Frost Giant, only he has been raised by Asguardians, which is why he looks human. He had a hard life, in his eyes anyway, and he's probably trying to wipe out everything because of that fact," Coulson filled in. He was about to explain more, but Tippi cut him off.
"And a realm is sort of like a dimension. It was originally believed that there was only nine, but there are actually an infinite amount. The reason why we brought you here is because, well, there's this book."
"What's in this book?" Steve said, fully interested now.

"It's sort of a guide, only not..." Tippi tried to explain, but was unable to find the right words.

"It's called the Light Prognosis, and it was written by Asguardians long ago. It tells some things that might happen in the future, and what to do in case of those problems do happen. There is another book, but that one only tells how to cause the problems. So, anyways, in this book it tells that there might be a time when someone uses this thing called the Tesseract, or Cosmic Cube, to destroy everything. It also says that there is a group of people who will be able to stop it, and everything points to you and your friends," Coulson said.

"How exactly will I be able to stop it, seeing as my friends aren't here and that Loki guy managed to defeat us easily?"

"There was another cube, but it was shattered, and it's pieces hidden across the realms long ago. If you are the true hero, then you would be able to locate and gather all the pieces of the Pure Cube, and then you would be able to defeat Loki. Will you do it?" Tippi said.
Steve thought it over for a minute. He had seen more than enough to convince him that this was all real, and he did need to rescue his friends.

Looking over at Tippi and Coulson, he said, "I'll do it."

When Natasha woke up, she found she was laying in front of an alter. Standing up, she also saw that Bruce was there, and he seemed just as confused as she was.

"Hey, Bruce, what are we doing here?" She said, turning to him.
"Oh, good, you're up. I'm not quite sure why we're here. But even stranger is that Tony and Clint were with us when we came here, but the just disappeared."
Natasha was about to speak again when two other people appeared in the room. As they walked closer, Natasha and Bruce could tell that it was Loki, and a lady was next to him. She looked fairly normal, except for her hair which was a light shade of pink. It was swept up into a messy bun, and she was wearing formal working clothes. She had glasses that were so dark so you couldn't see her eyes and she was writing constantly at a small notebook in her hands.

"Good, you are both awake. Now we can continue," Loki said when he had walked up to them. Natasha and Bruce and tried to run, but it had felt like their feet were glued to the floor.

"Continue what?" Natasha said, but Loki ignored her question.

"Um, sir? We're gonna have to wrap this up soon if we want to keep on schedule, 'k?" Loki's assistant chimed in.

"Fine, Nastasia," Loki said, then turned back to the others, " You are going to be married."
"What!" Both Bruce and Natasha exclaimed at the same time.

"We can't be married, we're just friends!" Bruce said.

"Yeah, and I have someone else!" Natasha said. Bruce turned to her.

"You do? Who?"
"Bruce there is more important things going on right now!" She snapped.

"I'm sorry to rush your big day, but we have to make this brief. Do you two take each other as your respective husband or wife?"

Both of the Avengers refused to answer. Noting this Loki turned to Nastasia, and gave her a nod.

Nastasia stopped writing in her book, and pushed her glasses up a little bit, and immediately pushed them down. In the short time her eyes were exposed, a red light flashed from them, and it sent something to Bruce.

Bruce began to hear a small voice in the back of his head. 'Say I do.' Bruce tried his best to ignore it, but the voice became more persistent and louder, until it was repeating it over and over in his head, each time louder than the last.

'Say I do. Say I do. Say I do! Say I do! SAY I DO!'

It flooded Bruce's mind, until he could think of that and nothing else. Something seemed to take hold of him.

"I do," He said, without really thinking of anything.

"What? Bruce. snap out of it!" Natasha tried to get Bruce to listen to her, but he was absolutely transfixed. Nastasia lifted her glasses again, this time sending something to Natasha. The same thing happened to her as it did to Bruce, but Natasha fought against it.

'I do. N...no. Say it now, K? I do. No. I'm not going to say it.'

Natasha mind was fighting against her and it was becoming difficult to fight back.

'Say it! I DO! No! SAY I DO!'

Then, her mind began to go blank, focusing only on those two words.

"I... I d-do..."