Disclaimer: I am not the owner of Rise of the Guardians or Phineas and Ferb.
As soon as Jack recovered from his flight, he noticed that something was off with the town. It had changed, statues and posters of some man named Doofenshmirtz were posted everywhere, even if the overall layout looked the same. Jack didn't have time to think about the changes, however, because Pitch was on his way there already. Jack stood ready this time, not willing to let his guard down in the battle. As soon as Pitch arrived, standing inside the building Jack was in, a blast of ice was waiting to greet him. Pitch fell back against the wall with a grunt, glaring at Frost as he realized the boy had been prepared.
Jack noticed others arrive as well, from some strange portal in the room. Two boys and a platypus came through it, before the portal vanished from sight. "Who are they?" Jack asked, getting distracted for a moment. Pitch had no idea either, but he would make them fear him just like everyone else.
"Hey Dr. D, you're famous here!" one of the kids yelled, making Jack notice the resemblance the pharmacist had to the statues and posters everywhere.
"Huh, should have seen that sooner. What did he do, find a cure for cancer?" Jack asked himself, flying over to them.
Pitch was getting annoyed with Jack, not wanting to be ignored. He got up, ready to attack the winter spirit when he noticed what had distracted Jack. This human was indeed very popular here, and everything was different. Standing still for a moment, Pitch began to realize that his power was even greater here than it had been before, being fueled by fear from all over the world. "Can it be? Is this a world were they all believe?" he asked himself, glancing down at his hands. Jack Frost didn't hear his question, but Pitch was determined to investigate further. Something major had happened with that portal and Pitch was going to figure out what it was.
Jack Frost was following the pharmacist, getting confused and worried when he heard him mention being from another dimension. "Uh oh. Please tell me I didn't screw up again! I brought Pitch to another dimension!" Jack said, beginning to panic slightly. He had wanted to help so badly, but every time it backfired. He couldn't protect Easter and he couldn't even bring one kid home without causing a disaster somewhere else in the world! Sighing, Jack followed this pharmacist, also curious to know what Doofenshmirtz's other self would be like. After all, apparently he was the leader of this world.
In A/D Doof's office, there was an argument going on unseen to normal eyes. The Pitch Black of this dimension was here, with plans far grander than before. He had succeeded in taking down the legendary Guardians, destroying belief and leaving only his fear in the world. Children everywhere could see and believe in him and it was all thanks to the help of a certain winter spirit. The white haired boy was here right now, upset with the new direction they were taking. "I get that you want more belief, but when are we going to get children to see me too?" he asked, sitting on the desk and ignoring the man behind him.
"Patience, Jack. You've done excellent work, helping to eliminate summer and bring fear to the children with your blizzards and freezing cold winds. I know that with a little more time and effort, that belief will come." Pitch said, touching the winter spirit's shoulder. After all, he couldn't lose his greatest ally now, even if he wasn't willing to share his belief. No, Jack Frost was on his own to gain believers, but Pitch would let the boy think that he was receiving help.
"So, what's the plan? Adults don't believe easily, you know." Jack asked, knowing what Pitch Black wanted. All children believed and feared him, so now Pitch wanted to dream even bigger. Pitch wanted everyone, adults and children alike, to fear and believe in him.
A/D Jack Frost, however, wanted just one person to see him. He had joined Pitch to get that belief, but nothing had changed. He used to love fun, bringing snowball fights to children. After trying for hundreds of years to get belief that way, Jack realized he was doing something wrong. When the battle between Pitch and the Guardians began, Jack saw a new way to gain belief, a way he had never thought of before. When Pitch offered Jack the chance to work together, he gladly accepted it knowing that someday, fear would bring him belief. Once he was seen, he could work on changing his image, but for now he had to get someone to see him.
"I'm still working on it. This is the man we will start with, the leader of it all. He is so inspiring, for a human. Bringing fear to people through his robot army, that is brilliant!" Pitch announced, glad to see that a human was taking so well to fueling the fear in the world.
"Hey, who's that?" Jack asked, seeing the doors open and bringing in what looked like the dictator's twin brother. Pitch frowned as well, before both of them froze at what else came through.
Jack Frost, the one that fell through the portal, flew into the room and froze at what he saw. Sitting on the desk in the room, was a man that looked like himself. He had the same white hair and blue eyes, carrying an identical staff. His hoodie was darker, pure black instead of blue, and his pants were a simple pair of jeans. Jack simply could not believe that there was another version of himself here, another person who could bring snow to the world and fun to children everywhere.
"Jack, you didn't tell me you had a brother," another voice said, interrupting Jack Frost's thoughts. He turned, this time growing defensive as he recognized Pitch Black, even if he looked a little different. He was still dressed in all black, with the same spiky hair and yellow eyes. The difference was the long cape he wore, black like the rest of his outfit, and the golden crown on his head. Clearly, Pitch saw himself as the ruler of this world already and Jack was going to stop him.
"I told you to leave me alone!" Jack Frost yelled, not realizing that it was someone else entirely.
As Jack went to blast A/D Pitch with his ice, he watched as his other self moved to defend the king of nightmares. Ice collided with ice, creating a snowy explosion in the room that distracted the people behind them. They had been arguing over if some pet was a secret agent, but now they were curious to know where the snow had come from. "Oh right, I forgot that I outlawed summer. Anyway, Platyborg do the same thing to those two boys," A/D Doofenshmirtz said, not realizing the snow was not his own doing.
Jack Frost was stunned to see that his other self was defending Pitch, but he didn't have time to deal with that. He had to protect the children from the robot platypus. He flew over to them, only to stop when their platypus stood up and punched Platyborg, making Jack grin. "Huh, so you are a secret agent. Never thought I'd meet an animal that could fight outside of the kangaroo," Jack commented, grinning at the platypus. A/D Jack was focused as well, trying to determine what was going on. He had never met this boy in his life, yet somehow he was an exact replica of himself outside of the color of his clothes.
"Who are you and why did you come here?" A/D Jack asked, his staff pointed at the other winter spirit.
Jack Frost turned around, still uncertain of how to react to himself. Normally, he would probably be thrilled and trying to start a massive snowball fight, but after seeing how this Jack defended Pitch, he did not know what to do. "Well, that's kind of hard to explain," he said, rubbing the back of his head slightly. A/D Jack Frost was not quite willing to accept that explanation, sending a warning shot of ice towards his other self.
Jack jumped up, letting it freeze the ground below his feet. Apparently, this dimension's Jack was rather violent. "I will not tolerate games or avoiding the question. Tell me what you are doing here and why you look like me," A/D Jack ordered, glancing at Pitch to make sure it was okay. A small nod was all the encouragement he needed, before he focused back on the boy in front of him.
"No, you couldn't have…you're working with Pitch? What happened to you here? I get that things were hard, but I would never help him," Jack said, noticing the motion.
A/D Jack didn't understand most of his comments, but he did realize that this boy knew who both of them were. Things did not look good for them, but that was before they heard a voice from the shadows. It was strange, an ability A/D Jack thought belonged to A/D Pitch alone, but it didn't change the fact that it happened. "Well, things just keep getting better and better." it said with a laugh. Jack Frost recognized Pitch Black's voice, jumping back when he saw a second Pitch arrive. Things were getting bad fast. Jack needed to get out of here, before it was too late.
"You are wasting your time, trying to get answers from Jack, Jack. I can provide you with the answers you need and much more," Pitch offered, smiling. He had seen so little of this world, but what he had seen pleased him greatly. Every child he saw could see him, and they feared him greatly. He was no longer invisible, hiding in the shadows and doing his best to get anyone to believe. In this world, all the hope and wonder protected by the Guardians was gone, and so were they.
A/D Jack was frowning, noticing the similarities between this man and the Pitch he knew. "Well, go on don't keep us waiting," A/D Pitch said, getting interested now that he had a twin as well. Two Jack Frosts might have been interesting, but with two of himself he could get so much more work done, spread so much more fear and gain the belief of adults that much quicker.
"We came through a portal, that took us here to another dimension," Pitch announced, grinning at the others. "I am Pitch Black, as is he, just like you two are both Jack Frost." he continued, pointing to everyone as he introduced them.
Jack wanted to stay and fight, but this was not going to go well for him on his own. They were distracted right now, figuring out what was going on, but eventually they would all team up and try and destroy him. Jack Frost could barely stand up to one Pitch, let alone two and some creepy version of himself. Deciding to use this as a distraction, Jack snuck away and flew off, trying to get as far away from them as possible. He would deal with them later, after he found the Guardians of this dimension and got some help. He would save this world, just like he was supposed to do for his own. After all, he had been chosen to be a Guardian. It was about time he started doing his job.
I'm going to be honest, I wrote a draft of this story a long time ago and I hate the style I used to have for writing. When I began posting this, I had every intention of rewriting it as a result...but I'm lacking the motivation to do so with everything else going on. Either way, I figured it was about time I posted a second chapter. If you guys don't care, I'll just edit what I have to give more frequent updates instead of completely redoing this story. Feel free to review and tell me what you think!