A/N: Hi, Crescendo here! So this is my first fanfic EVER and, lo and behold, I'm writing it about ROTG, a fandom I recently became a part of. Before we get started, a few notes:

IMPORTANT PLEASE READ

I messed with the time line a bit. In this fic, Pitch asks Jack to join him after the incident at Tooth's Palace.

Sandy's not dead yet, I have a plan for him later.

This is a Dark!Jack fic, and he will be a bit OOC

With all that being said, please enjoy the first chapter of "Revenge of the Forgotten"!

It was a dark, snow filed night in the town of Burgess, Pennsylvania. If one listened closely, one could hear the creatures of the night that so rarely revealed themselves time of year.

At the outskirts of the sleeping town, on a frozen lake, stood one winter spirit named Jack Frost, and he was currently in the middle of the biggest decisions of his life. He sighed while sitting cross-legged on the frozen surface. His thoughts then drifted to what Pitch had told him after the events at Tooth's Palace.

*Flashback*

"What goes together better than cold and dark?" Pitch exclaimed, gesturing to the gigantic ice statue in front of them. It was made with Jack's ice was mixed with Pitch's nightmare sand, making it quite frightening yet eerily beautiful.

"We could make them believe! We'll give them a world where everything, everything is-"

"Pitch Black?" Jack asked, turning to face the Nightmare King.

Pitch looked at Jack with piercing gold eyes and smirked. "…and Jack Frost, too."

*Flashback End*

Jack was nearly surprised at himself for not rejecting the offer outright. An alliance with Pitch Black, the Boogeyman? The embodiment of fear itself?

But the offer to be believed in, to be seen, to be heard? It was almost too good to be true, and Jack found himself wanting it every moment he thought of it.

It wasn't like he would be betraying the Guardians in any way. It was just as Pitch said at the Palace; he was a neutral party, a more active observer. He never wanted to be a Guardian in the first place. He wasn't cut out to be one anyways, even the Kangaroo had attested to that.

Jack blinked when he realized that he had no reason to join the Guardian at all. They had never been there for him; the first few years of Jack's life as a spirit, he had gone to them for help in the midst of his confusion, but they turned him away. North's yetis tossed him out before he even got close to the workshop, Tooth's fairies kept pecking at him, Bunnymund wanted nothing to do with him after the blizzard of '68, and Sandy simply didn't have time for him. They all had things to do spreading wonder and hope to the children of the world who believed in them.

While Jack remained alone and invisible. Just like…

"Like Pitch," Jack realized. They were more alike than he thought.

Jack stood up, a small grin on his face and his bright blue eyes shining with excitement.

"Wind!" Jack called, and the North Wind whirled around and whipped his already wind-blown white hair. "Take me to Pitch's place."

It was time to make a deal with the Boogeyman.

When Jack land near Pitch's lair, he saw a rickety, broken bed frame. Under it, he could see a large tunnel.

'Under the Bed,' Jack mused. 'Huh. Nice pun.'

Jack flew down the tunnel, navigated through the lesser tunnels, and finally made his way to the room with the cages.

When the little tooth fairies saw Jack, they started chirping excitedly, expecting Jack to free them. Said winter spirit looked up at them with a blank expression before he caught shadows moving in his peripheral vision to his left.

He sighed. "I know you're there, Pitch."

Sinister laughter echoed all around, until the King of Nightmares himself stepped out of the shadows, his golden eyes flashing but his expression otherwise unreadable.

"Ah, Jack Frost, welcome. I assume you're here about my offer?" He asked in his smooth English accent.

"I've given it some thought."

"And?" Pitch pressed.

"I think you already know," Jack replied, leaning on his staff and crossing his arms.

"I still want to hear it."

Jack stared at Pitch for a minute and then closed his eyes. "I've decided that you're right. The Guardians have been basking in the glory of belief for centuries while we have been invisible and neglected." Jack opened his eyes and smirked, crystal blue orbs gleaming with mischief. "I think it's time someone knocked them off their pedestals."

Pitch smirked as well, showing off his razor teeth. "Excellent. You shall not regret this. Come, I will show you your room."

He turned and left through one of the many tunnels leading out of the large room, Jack following close behind.

When they reached the end of the tunnel, there was a single door with a snowflake design. Jack raised and snow white eyebrow at Pitch, who shrugged.

"Indecisiveness and doubt are other forms of fear. When I felt it coming for you, I knew you had made your choice."

Jack hummed, then turned the doorknob and entered the room. He gasped slightly and his eyes widened when he took the room in.

Then walls were black, of course, but the bed was completely covered in snow. There were two piles of snow that Jack guessed were supposed to serve as beanbag seats.

"Wow…I mean, wow, Pitch. How in MiM's name did you manage to get all this snow in here in such a short time?" he asked, shocked.

Pitch chuckled. "Well, the Nightmares made this easier on me. It's not easy hauling all this snow down here, you know."

"Why are you saying it like you did most of the work?"

"Quiet you. Now get some rest, we will discuss our course of action tomorrow."

"Alright," Jack said, and then grinned cheekily. "Night, Boogeyman~!"

Pitch's eyebrow twitched. "Go to bed, Frost," he said irritably, then left the room and closed the door with a slam.

Jack, unperturbed, laughed. Teasing Pitch just might become one of his favorite pastimes; his reactions were even funnier than Bunnymund's.

Jack then yawned and suddenly realized how tired he really was. He rested his staff against the wall, then plopped himself on his bed of snow. The temperature was at least -120 degrees, so he didn't have to worry about finding giant puddles of water when he woke up. He snuggled up to a small pile, then closed his eyes and fell into a dreamless sleep.

The next day, Jack woke up to a rough knocking at his door Rubbing his eyes, mumbling grumpily and running his hand through his snow white hair, he opened the door to find a Nightmare standing there.

"Whoa!" Jack cried, instantly reaching for his staff before calming down after he remembered where he was and why. Still, he was a little wary of the dark horse; it was more than a little intimidating with its glowing yellow eyes.

"I'm guessing that Pitch wants to see me?" he asked.

The Nightmare whinnied once in affirmative before promptly vanishing.

Jack sighed, grabbed his staff and flew down to the cage room (does this place even have a name? whatever it's the cage room now). When he reached there, the little fairies went wild again, this time seemingly pleading with Jack to release them. Jack looked at them impassively for a moment before smirking at them. He turned away from them and saw Pitch standing in front of a giant globe exactly like North's, but a darker version. His back was to Jack when said winter spirit floated down beside him.

"I'm guessing that all those lights are the children that still believe in the Guardians," Jack stated.

Pitch turned his head to him, smiling slightly. "Keen observation, Jack. Indeed, that's exactly what this is." He smiled evilly then. "Though, that will all soon change. And I just came up with an idea that will make this a whole lot easier on both of us."

"Oh?" Jack questioned, curious. He adjusted himself in a cross-legged position, still floating. "Care to share, oh wise Nightmare King?"

Pitch decided to ignore the snarky comment and continued. "We both know that separately, we are powerful, and together, we will be extraordinary. However, this is the Big Four we're talking about. Even with both our powers, it would be extremely difficult, and we could very well lose."

Jack immediately saw where Pitch was going with this. "You're saying we need help." It wasn't a question, so Pitch didn't bother answering.

'If the self-proclaimed Nightmare King admits that we need help, then we obviously must need it,' Jack thought.

But who to choose? Most of the other spirits were loyal to the Guardians, and the ones that didn't hated Pitch for his nightmares and Jack for his pranks.

'Hmm. Wait, what about…!'

Jack suddenly got a very devious smile on his face, which did not go unnoticed by Pitch, who smiled wickedly in return.

"Oh my, does little Jack Frost have an idea?" he quipped.

Like Pitch, Jack ignored the remark and said, "As a matter of fact, I do. See, during my first few years as a spirit, I found out that at the same time, three others were reborn as well. And just like you and me, no one believes in them. I think they'll be perfect."

Pitch considered it for a moment. "Interesting. Pray tell, what spirits are they?"

Jack smiled, strangely pleased that Pitch liked his idea. He floated upside-down, still cross-legged, and answered, "Valentine's, Halloween, and New Year's Eve."

"Aren't those all well-known holidays?"

"The holidays, yes. The spirits, not so much. No one even thinks about the concept of Cupid, no one believed in Halloween to begin with, and New Year's? Please," Jack scoffed, but then his eyes softened. "They're all good guys though, the best, and trustworthy, too. Haven't seen them in years, but I'm positive they haven't changed a bit."

"You seem very fond of them," Pitch observed.

"Yeah, well. They were my only friends, and really, all we had was each other. We kinda went our own ways about two hundred years ago, but I'm 99.9% sure they're still neutral like I was," Jack said.

"Very well then, let's go and find these friends of yours. You know where they are, correct?" Jack nodded, the smirked mischievously and disappeared into the shadows.

It was time to ay Valentine's a visit.

Please R&R!