Well, I know my OC Willight Robinbine as I do know as now. But, this is whole backstory of this OC. And it goes like this...

It was a nice day for William Robinson, a adult earth pony with glasses, that loves to play on computers and on xbox 360 at home in Ponyville. He had a brown buzzcut mane and a brown tail that has been groomed a bit. Had a cutiemark of a computer with an xbox 360 gaming controller. Have lots of friends because of Pinkie Pie introduced them to him. One day in Ponyville while William Robinson was having fun with the mane 6, an unknown force grabbed William Robinson by the torso, trying to resisted this force and failed at doing so. This so what called "Unknown Force" made him to appear at some room with a portal to another realm, but William Robinson thought of something.

"Should I go through this portal to see what lurks in this so called realm?," William Robinson thought to himself.

Then all of sudden, William Robinson was being pulled by the portal and caught him by surprise. After he was just been pulled into the portal, he woke up that he wasn't in Ponyville or for that matter in Equestria with his friends.

"Ok, the last thing I remembered before I woked up in this spooky graveyard is that I was playing with my friends for all of a sudden that I was being forced by this unknown force that got me and took me into this some room I believed it was in Canterlot and when I was pulled into the portal I passed out," William Robinson saying to nopony at all.

Just when I went into the graveyard, I saw somepony, no it was the main 6 that I was just playing with in Ponyville, but they seem look different than the main 6. Then all of a sudden, I got hit in the back of my head really hard with a cooking pan. I passed out for the 2nd time today.

When I woke up, I was held by some magic force that I didn't know of.

"Urrgg! Let me go!," I said yelling trying to getting myself free from this unknown magic force.

"Oh, come on now. I heard that one like lot of times," said the strange female dark-purple alicorn.

It was no use, I couldn't get myself free from that unknown magic force.

"Ok.," I just said to the ponies.

"What do you want with me?," I said to all 6 ponies.

"Well, if you don't mine, we like to test this out to somepony that would become our co-leader," said the female dark-purple alicorn to me.

"What do you mean by, co-leader?," I asked to the female dark-purple alicorn.

"Well, I got bored of being just the leader of the Elements of Insanity and I just wanted to have a partner or co-leader, so I can have somepony to have to help me with bring chaos and destruction to others to have fun," the female dark-purple alicorn said to me.

"Do you want to join us, the elements of insanity, the bringer of all chaos and destruction to everywhere we go?," the female dark-purple alicorn asked me.

"Well, I. I...," I try to say something to them.

With a sigh, "Yes, I will join you.," I said to them in defeat.

"Ok.," the female dark-purple alicorn said.

"Rainbine and I will give you a share of both of powers together," said the female dark-purple alicorn to me.

"Oh before we do that...," the female dark-purple alicorn starting to say something to me.

"...Is to tell us your name?," the female dark-purple alicorn asked me.

"Well, my name is William Robinson.," I just said my name to all 6 ponies.

"Very well.," said the female dark-purple alicorn.

"Rainbine...," the female dark-purple alicorn started to say something to one of their group members.

"Yes, Brutalight?," asked the pony so called Rainbine to the female dark-purple alicorn who is so called Brutalight.

"Lets give him our share of our powers we prosessed," Brutalight said to Rainbine.

"Ok Brutalight," Rainbine said back to Brutalight.

"He'll never be the same as he is before.," Brutalight said.

When all of a sudden, I was just suddenly screamed in fear of this new power that was lurking me inside. But, I stay calmed for the whole that I was going to be their co-leader for the rest of my life. After a bright light was gone, I was reborn. Then one of their group members said this to introduced to the new co-leader.

"Everypony, I give you Willight Robinbine!," said the pony with the same mane as Rarity and had a cutiemark of an purple like apple with a gem like did Rarity had with her cutiemark in the middle of the apple.

"Wow.," I just said when I start to gain control of myself.

"I feel.... I feel.... I feel so alive!," I said to everypony as I was started to laugh super evil like.

"He's reborn.," said the pony with a red mane and a cutiemark of a speaker from those loud speakers that you see from town hall in Ponyville and it has blood on it started to laugh.

"Also, he's got an migraine, so just shut the hell up.," I said to them.

"Ooh, he's a real feisty one, ain't he.," said the pony with a yellow or green mane and a cutiemark of cogs also with a scope in front of one of the eyes.

"Feisty.," said some type of unknown creature passby the pony who said the word "feisty".

"Who said that?," said the pony who said the word "feisty".

After all that happen, I was now Willight Robinbine, their now co-leader of the Elements of Insanity. I asked them what were their names. And they did tell me their names, and their powers as well. So now I was the co-leader, I did had some jobs that Brutalight told me to do. I had a hell of a good time with the new powers that both Brutalight and Rainbine gave me. I was part cyborg, and part pony. I will tell you the best part of having these new powers, I fell like that I can go super saiyan on anyone/anypony who was in the way of my jobs. I did asked them something that I had my mind onto and it was like this...

"Brutalight, can I send a letter to my other friends to tell them that I'm doing fine where I'm at and having a ton of fun with stuff?," I asked Brutalight if this was ok with her.

"Yes you can Willight.," Brutalight told me.

"Ok.," I said to Brutalight.

"Can you get me something to write with and something to write on with a bottle of ink for to start writing Brutalight?," I asked to Brutalight.

"Oh course Willight.," Brutalight said to me for my request.

"Here you go Willight, something to write with, something to write on and a bottle of ink to start on writing.," said Brutalight while she gave me the requirements to send a letter to my other friends.

This is what I wrote in that letter: "Dear my 6 friends in Ponyville, I didn't know what was happening to me when I just disappeared from your sight. But I found a portal that can go to different realms, when I went in through the portal, I passed out from too much resistent from the unknown force. But when I woke up, I was in another realm. Not the realm you went went Sunset Shimmer stold your princess crown and had to get through High School for to get the crown that was you had to be the Princess of the Fall Formal to get the crown back and after that you got your crown back. But the realm I went to was different from any realm you been to. I was at a very spooky graveyard. I was hit in the back of my head very hard by a cooking pan. I passed out again. But when I woke up, I saw 6 ponies that look like you guys but they were different from you. I did feel evil powers coming from those 6 ponies. But I was stuck in an very powerful magic force that I couldn't get free from it. But I couldn't take it anymore, I decided to join in what now is called the Elements of Insanity. I was now their co-leader and got new powers and now I'm an alicorn like you Twilight, but an evil alicorn with powers that even Discord can't faced to. Oh, I'm no longer named William Robinson anymore. Now you will be called me by my new name Willight Robinbine. So, you better be prepared girls, you are gonna be faced by the Elements of Insanity. You can't win the battle, I assure you that. Hahhahahahahhahaha!!!! Your friend and now evil Willight Robinbine."

"Now can you send this letter to my other friends now.," I said to Brutalight to send my letter to those call dear Elements of Harmony.

"Yes I will.," said Brutalight when she just send my letter.

"Now all we to do is wait for them to come here and then we will defeat them once and for all.," I said to everypony.

Meanwhile in Ponyville, Twilight and her friends were just having fun after even I have left them. A letter had appeared out of nowhere without the help of their dragon friend and Twilight's number one assistant Spike.

"Ay Twilight?," Applejack asked Twilight in her country voice.

"What is it Applejack?," Twilight asked to Applejack.

"Can you see what does this letter have to a say to us y'all?," Applejack asked Twilight to read the letter what does it mean.

"Girls," said Twilight.

"Ok this is what this letter had to say to us.," said Twilight as she started reading the letter that came out of nowhere.

"Dear my 6 friends in Ponyville, I didn't know what was happening to me when I just disappeared from your sight. But I found a portal that can go to different realms, when I went in through the portal, I passed out from too much resistent from the unknown force. But when I woke up, I was in another realm. Not the realm you went went Sunset Shimmer stold your princess crown and had to get through High School for to get the crown that was you had to be the Princess of the Fall Formal to get the crown back and after that you got your crown back. But the realm I went to was different from any realm you been to. I was at a very spooky graveyard. I was hit in the back of my head very hard by a cooking pan. I passed out again. But when I woke up, I saw 6 ponies that look like you guys but they were different from you. I did feel evil powers coming from those 6 ponies. But I was stuck in an very powerful magic force that I couldn't get free from it. But I couldn't take it anymore, I decided to join in what now is called the Elements of Insanity. I was now their co-leader and got new powers and now I'm an alicorn like you Twilight, but an evil alicorn with powers that even Discord can't faced to. Oh, I'm no longer named William Robinson anymore. Now you will be called me by my new name Willight Robinbine. So, you better be prepared girls, you are gonna be faced by the Elements of Insanity. You can't win the battle, I assure you that. Hahhahahahahhahaha!!!! Your friend and now evil Willight Robinbine."

"Oh my...," Fluttershy said.

"Uhh Twilight? Do you know where this place is at?," Rainbow Dash asked to Twilight.

"Yes I do where that portal is Rainbow.," Twilight said to Rainbow.

"Girls.," Twilight said to get the other's attention.

"Yes Twilight?," as the other 5 ponies said in unisen.

"Get the Elements of Harmory and meet me at the portal, I think this is going to be a very tough battle we had ever faced before.," Twilight said to the other 5 ponies.

2 Hours Later.

Twilight and her friends got the Elements of Harmory and wearing them and now they felt some force that came from the portal.

"I don't remember the portal doing like this ever before.," said Twilight with a worried look on her face.

Then all of a sudden, the portal did the exact samething when it did to their now evil friend and enemy Willight Robinbine. The Elements of Insanity were waiting at where the portal had sent Willight Robinbine after he had recovered from the portal.

"Uhh my head.," said the Elements of Harmony after recovering from that force that portal did to them.

"Look who we have here.," said Brutalight to the other Elements of Insanity.

"It's those Elements of Harmory.," I said.

"We were waiting for you to come so we can defeat you once and for all.," I said.

All the Elements of Harmony's jaws drop when they "him" with those ponies. "WHAATTT??!?!?," All the Elements of Harmony said in unisen.

"Now that your here now.," I started to say to the Elements of Harmony.

"Lets start this fight to the death!," I said to the Elements of Harmony. The other Elements of Insanity agreed with me and we all started fighting each other.

I was fighting with Twilight and Rarity. Brutalight and the others were fighting the other Elements of Harmony. I hit both Twilight and Rarity so hard, that their horns were missing.

"Ehhehehehe mahammahhmahmahahahahha!!!!!!!!!!!!!!!!," as I did my very evil laugh to both Twilight and Rarity.

"Oh and also, I will take your wings away Twilight Sparkle.," I said to a weaken Twilight Sparkle.

As I look the wings off from Twilight, I saw blood coming from Twilight and I enjoy it very much of.

"Now your just an Earth Pony like I was before I was turned into what I was now.," I said to Twilight mockily with an evil chuckle. I saw the other Elements of Harmony, now defeated and have no power whatsoever.

"Not even the magic of friendship can save you now!," as I and others Elements of Insanity laughed at the now Non Elements of Harmony.

"Your gonna be stuck in this world FOREEVER!," I said to the Non Elements of Harmony.

"Damnit all!," Applejack yelled.

"This is hopeless.," said now a so weaken Twilight Sparkle.

"We will be your slaves and you can do whatever you want with us.," said Rainbow Dash now in defeat with the other weaken ponies.

"As you wish.," I said to them.

We nodded and took the weaken ponies to somewhere now they can recover of what happen eariler.

"I healed all of you and what you were before we defeated you," as I said to the defeated ponies.

"Now Elements of Insanity, lets make them evil too like we are.," I said to the other Elements of Insanity.

"Ok!," said the other Elements of Insanity with my evil plan for their punishment.

All 7 of us Elements of Insanity gave those ponies a share of our power of being an Element of Insanity. Now those 6 ponies are now evil like us, but with different cutiemarks and looks than we had. But still, Brutalight Sparcake is still the leader of the Elements of Insanity and now we have 6 new Elements of Insanity to our group.

"Now lets go Elements of Insanity and teach Equestria what's the true meaning of choas and destruction!," as Brutalight said to the other Elements of Insanity.

"Now we are all in Equestria, let's go and cause some CHAOS!," Brutalight said to the rest of us.

"Even the princess of the sun and moon are now in fear of us Elements of Insanity.," I said to the group.

"Now that's that.," I said to give them the next move.

"Let's go the other parts of all Equestria and beyond to cause some chaos, destruction, and disharmory!," I said giving the rest of the Elements of Insanity the signal to our next move.

"Now we got the entire planet fearing us.," Brutalight said.

"Now let's do the same thing with the multiverse!," Brutalight said.

"Now everyone and everything now feared of us, now what do we do now?," asked Brutalight to me.

"Now.," as I gave a smile to them.

"Now, we can go back to our universe to have a party of having the entire multiverse feared us," I said to the rest of the Elements of Insanity.

"Ok!," they said in unisen.

When we got back home, "even if Pinkie Pie was an Element of Insanity like us.," I thought to myself.

"She still throws one of an fucking hell party for what we did to the multiverse.," I continued to thought to myself.

"Willight!," said Pinkie Pie.

"Yes Pinkie?," I asked her.

"Now show us what you do during parties like this one.," Pinkie Pie said to me.

"Ok, I will.," I said back to Pinkie.

I pulled out a computer, a dj out of nowhere and start playing the song I always loved to listen to like parties like this one.

"This song I'm about to play is going to be the most fucking epic songs of all parties of parties.," I said to everypony else.

As I start playing that song, just came out of nowhere, was DjP0N3 at the dj made the song even more fucking epic then before.

"So let's get this party started!," yelled DJP0N3.

"I can't believed what I just heard.," I thought to myself.

"She made the song even more fucking awesome than ever before.," as I continued my thought to myself.

After the party had finished, we said our goodbyes to DJP0N3 after that fucking awesome song she did. And now, we can rest.

"Now I feel very tired after that party.," I said when I yawned.

"I'm going to bed now.," as I said to the other Elements of Insanity also continued to yawn.

"Goodnight Willight!," the others said to me.

"Goodnight Elements of Insanity!," as I said going to bed.

I went to bed went to sleep. After that, the others decided it's time to go to bed as well. So they did. The end!