AN: Hello this is my first The Originals fanfiction, so please be nice. This is set in 1x08. I started with this episode because to me it was the easiest for me to introduce William, there will be hints to the rest of the season and the episodes before this one, almost everything is the same as the series though a lot of it will be different.

Disclaimer: I do not own The Originals or any of its characters. I only own the Oc's. I also do not own the actors and actresses that I have cast as the oc's

Summary: Billy is Elijah's fraternal twin brother. He hasn't seen his brothers and sister for over 300 years. Until he hears that Klaus is in trouble. He tracks his little brother to New Orleans and shows up just in time to see his brother being attacked by a group of Vampires, and helps him out, but does Billy hold secrets about Klaus' child.

O.C list

William (Billy) Mikaelson - Daniel Jacob

Trinity Adams - Anna Kendricks

Kevin Adams - Gavin Macintosh

An2: Let's get started.

Monroe, Louisiana

Trinity's hut

"Why are you leaving?" Trinity asked me.

"My brother needs help." I told him, putting my hand on her shoulder.

"So, why should you help him?" Her son, Kevin asked.

"He's my brother." I told them.

"What has he done to deserve you help?" She asked. "Hmm, all he has done is cause you and your sibling trouble. He abandoned his own child."

"You can't hold that against him." I told her. "He might cause trouble, but when we were younger I promised to keep him safe, I have failed him so many times in the last 1,000 years, I will not fail him again."

"Trinity can you do a locator spell?" I asked her.

"Yes, I'll need a drop of your blood or something that belongs to him." She told me. I nodded while Kevin pulled a map of the usa out of his dracula back pack and laid it out on the ground in front of his mother.

I then bit my hand and held it over the map, and watched as my blood fell onto it. After 5 minutes of chanting, Trinity looked up at me and said "The closest I can get you, is the french quarter in New Orleans."

"Well, at least he's close." I said, picking up my duffle bag. "I'll be back once the war is over. You be good for you mother young man."

"Yes, sir." He said back, giving me a huge hug.

When he let go I turned to Trinity. "If you need me you have my number." I told her.

"I know." She said. "William, don't forget."

"Don't forget what?" I asked her, brushing a strand of light brown hair that had come loose from her ponytail, before lightly tracing my fingers along the four healed claw marks that went across her face, starting just above her right eye and ending just below the left corner of her mouth.

"Don't tell Klaus my secret." She said, kissing his cheek before she lead her son into the cabin.

New Orleans, Louisiana

The Compound.

When I made it to the french quarter, I started listening, watching, and scenting for Klaus, Elijah, or even Rebekah. As I walked past an old compound I heard my brother's voice. "Whoever picks up this coin, gets to live." I made my way in slowly to see what was going on.

As I got to the entrance of a huge quart yard, I saw my brother who was surrounded by vampires. In front of him, stood a vampire with dark skin, and behind him was my sister Rebekah. I watched as no one picked up the old coin that was on the ground.

"Take him." The dark skinned man said.

I watched as two vampires charged my brother, but before they hit their target. I had zoomed, and pulled the hearts out of both of them. I looked at my sister, and smirked at her gasp.

"You." She whispered.

"Look who came to their senses." Klaus said, thinking that I was one of his enemy turned ally. "Thanks for the help mate."

I turned to him and smiled. "Of course. I did promise to keep you safe after all." I told him, before he could speak I addressed the rest of the Vampires. "Are you all fools? You dare to attack a Mikaelson, I mean not only is he an Original Vampire, he's the original hybrid. He could tear through you in seconds."

"I'm sorry who are you?" The Dark skinned man asked, walking up to me.

"Why this happens to be, my big brother William." Klaus answered for me. "The only sibling I can trust." He added, glaring at Rebekah, who was still in awe over the fact that William was here.

"Rebekah, is that true?" He asked her. She just nodded.

"May I ask you the same question?" I asked him.

"I'm Marcel Gerard." He said, extending his hand. "King of New Orleans."

"He always forgets the, self proclaimed, part." Klaus told me.

"Well, like my brother said, I'm William." I told him, I glared at his hand. "Pardon me, if I don't feel like shaking hands with the man who tried to kill my brother."

"It's been 300 years, William." Rebekah said, regaining her speech. "Nik is not the same man you knew. He has daggered all of us, with the exception of you, over and over again."

"Whether or not he is the same, he is my brother." I told her. "I'll stand by his side and fulfill my promise to him, to protect him. Always and Forever. Now for the rest of you, you can either go home, take my brother's generous offer or, you can face 2 originals."

"Go ahead." Marcel told, them. "If you would like to take William's offer take it."

About 10 vampires zoomed out of the building, after mumbling something about not being told that they would be up against 2 originals, and 2 zoomed towards the coin trying to get to it before the other one did.

"No, need to fight." I told, them. They stopped and looked up at me. "You all may take the deal. What are your names?" I asked.

"I'm Connor." The tallest one said, he was probably 6 feet tall, he had blonde hair and didn't look older than 16, he was wearing a light blue t-shirt, with a white thumbs up sign on it, and black jeans. "I just joined Marcel, I'm not ready to die yet, sir."

The girl nodded in agreement, she kind of reminded me of Trinity, she had the same light brown hair, but she had dark brown eyes instead of bright blue, she was wearing a red tank top and blue shorts that stopped at the knee, and she was around 5 feet tall. "I'm Kayla, sir." She said, walking towards us. "

"Are we going to fight, or gossip like a bunch of old ladies." My brother said, growing annoyed.

"You're quite right Niklaus." I told him. "So, Marcel. Shall we continue?"

"Attack." He said, glaring at the two vampires, who were now hiding behind me.

"No, Marcel." Rebekah begged. "William has nothing to do with this."

"He's standing, with Klaus." Marcel told her. "He has everything to do with this."

"Don't worry about me, little sister." I told her, as the remaining vampires grew closer, I pulled the young vampires behind me.

It wasn't long before three of biggest vampires, rushed my brother, but before I could react, I heard a scream, come from my right. I looked, and saw that one of the vampires had Kayla pinned to one of the columns, I zoomed over to them, and pinned his arms behind his back. "That is no way to treat a lady." I told him, I then spun him around and yanked his heart out. "Find Connor, and try to get out, I'll find you two when I'm done here." She nodded, then ran over to Connor who had just ripped the heart out of a small female vampire, and they ran outside.

"William!" I heard my brother call me. I looked and saw my brother being dragged into a corridor, and zoomed to him only to be stopped, by Marcel who held my arms behind his back. "Let go of him!" My brother yelled pulling against the chains that held him back.

"You need to see his true form." Rebekah told me. "We just need to get him angry enough." She then lifted up a dagger.

"You would not dare." I said, as I fought against Marcel's grip.

When I broke free, I quickly turned to him, and threw him across the room. I went to run to klaus, when I froze at the sight of his eyes. They were a the light golden color of the werewolves, and the black veins of a vampire underneath them. He then yanked the chains and sent the ones on the other side flying, he grabbed the nearest one and bit him with is, werewolf/vampire fangs and dropped him the ground. He then grabbed the next one and broke his spine, he continued to slaughter the vampires before yelling. "Marcel, come and finish this!"

Marcel went to face him, before being stopped by Rebekah. "No." She begged. "Pick up the coin."

"What?" He asked.

"He won't stop until everyone is dead." She continued. "Including you. Pick up the coin. End this."

As Klaus fought his way through the crowd, into the clearing I zoomed to his side and stood protectively beside him, daring anyone to attack him.

"Enough!" Marcel yelled, as Klaus finished off two more vampires. He then bent over and picked up the coin.

"Well, well, well." My brother started. "The great Marcel Gerard, self proclaimed king of New Orleans bowing to me."

"There." He said, tossing the coin, at my brothers feet. "I hereby pledge my allegiance to you, I give you the keys to my kingdom, it's yours." He finished in a sad whisper.

My brother smirked, before turning to me. His head hung low as if he was scared to look at me.

"What is troubling you, brother?" I asked him, I went up to him and placed my hands on each side of his face and gently lifted it up so he was looking at me.

"You saw my true form." He whispered. "You probably hate me now."

"Nothing will make me hate you." I told him.

He smiled at me, and patted my shoulder. "Let's collect Connor and Kayla, and go find Elijah."

An: So, what do you think? Let me know in the reviews. Please read and review. I'll be casting Connor and Kayla in the next chapter. Bye-bye butterfly.