A dark figure stepped out of the portal that led to the Land of Ooo. He looked around, observing this world which was way different from the Nightosphere.
His name was Shizriu, and he was a Shadow Elemental. Not just any Shadow Elemental. He was the Prince of the Shadow Kingdom.
He stood tall, wearing a black hooded cape which covered his already dark face so that only his glowing red eyes shone brightly under the hood.
He had been banished to the Nightosphere by his own parents, the King and Queen of the Shadow Kingdom in hopes that he would find the chaos inspiring enough for him to do some real evil.
Though Shizriu hated to admit it, he was destined to cause chaos anyway. That was the way of Shadow Elementals. He held up his right hand and any and all shadows seemed to rise like a liquid.
He had the shadows cover up the skies. "Ah, that is much better." Shizriu said, taking his hood off to reveal his face and his semi-long and messy mane of hair.
"Well then… This land shall be mine for the taking." He said, replacing his hood over his head so that it covered his face with darkness again.
He then beckoned the shadows of trees and other scenery to join the mass of shadows which was slowly coving the land in darkness.
As Shizriu walked he covered more and more of Ooo's skies with dark shadows. He came upon a tree house which seemed familiar to him.
The only thing that was different about it was that there was a human child and a yellow dog that were outside fighting small creatures.
"How DARE a mere mortal child take refuge in her house…" Shizriu had thought to himself. "This child and his dog shall be the first of my victims."
Shizriu's cloud of darkness shrouded the light over the human and his dog's heads, "Yo, Man! What the hey?" The human child exclaimed.
"What happened to the sun?" He had asked his dog companion. "I dunno, Fin. But it's starting to creep me out." The dog said.
"Don't worry, Jake. It's probably just some storm clouds or something." The child named Fin said. Shizriu advanced upon the two and looked down upon them with disgust.
Fin looked at him and jumped back, drawing his sword. "Yo, dude. I don't know who you are, but if you are the cause of this darkness then I'm going to have to stop you."
Shizriu scoffed and replied "You? Stop me? Don't make me laugh foolish human. I shall cover this land in darkness and prove that I am more than just a sniveling coward to my parents."
Shizriu then redoubled his glare upon Fin and Jake and said, "But before that happens, I have to wonder why there is a child and his dog squatting on her house." Fin looked at Jake in a bit of confusion, to which Jake just shrugged.
Shizriu's frustration flared and decided he would reword his statement. "Why are you two trespassing on the house of the Vampire Queen?"
Fin and Jake both looked at each other again and this time Jake answered, "But Marceline left this house and said we could live in it."
This didn't calm Shizriu down; in fact news that she had left this home was very unsettling. He had hoped to see Marceline when he departed the Nightosphere, but now he was unsure where she might be.
Shizriu then commanded shadows to knock Fin and Jake to the side so that he could continue his conquest upon the Land of Ooo.
He had reached a marvelous kingdom made of candy. He knew this place very well. He had once befriended the princess of the Candy Kingdom.
But unfortunately, friendships would only impede the wish that his parents had asked of him. So he continued on, covering the skies over the Candy Kingdom with darkness.
Princess Bubblegum came running out of her chambers and onto a balcony. She spotted Shizriu and shouted "Please, stop what you are doing!"
Shizriu looked up at her and shook his head. "I wish I could. But the Land of Ooo will belong to the darkness."
Suddenly there were voices behind Shizriu, "Yo! Dark-butt. Why don't you face me head on?"
Shizriu turned around and saw a panting Fin who, from the looks of it, ran the whole way behind Shizriu to keep up with him.
Though there was something strange. As if someone was missing… Shizriu then realized it and asked Fin, "Where is your dog companion?"
And as soon as the question exited from his mouth he saw the dog, who was now bigger, and his legs seemed to have stretched and raised his body about 20 feet in the air.
The worse part though, the part that filled Shizriu with slight dread, fear, and joy all at the same time. Was that Marceline was riding on his back.