Nico Is An Alternate Character From An Alternate Universe Of Sonic's.

Due to Unknown Reasons She Was Teleported To Sonic's World, During the Transportation She Began To Deform Earning A Major Scare On Her Chest.

She Became Scared Of Her Surroundings, Unsure On What She should Do, When Suddenly Sonic Found Her, "You good Buddy?" He Asked. Nico Became Scared And Shoved Sonic Away From Her Telling Him To Back Off.

"What's Wrong?" Sonic Asked Concerned

"Nothing..." She Said.

As She Began to Feel Weird, She Suddenly Viewed Sonic As A Threat And Killed Him Without Even Thinking.

She Suddenly Snapped Back And Saw Sonic's Dead Body On The Ground

She Began To Cry.

She Ran Away From The Scene, Running Extremely Fast Before Tripping And Slamming Her Head Into A Rock Knocking Her Out. 

Later She Was Found By Tails Who Took Her Back to His Lab To See If She Was Ok, She Woke Up, And Tails Was Surprise, "Woah you're Awake!" He Said, "Are You Ok?" 

"Yeah..Y-Yeah I Think" Nico Replied. Suddenly Her Head Began to Ring As Suddenly She Viewed Tails As A Threat, Suddenly Killing Him Without Even Realizing It. 

Once She Snapped Back To Reality She began to Cry More, "Why..." She Whimpered Before Running Away.

Suddenly She Was Caught By Eggman, "HO HO HO SONIC, I FOUND YOU!" He Exclaimed.

Nico Was Confused, "S-Sonic?" She Said.

"Stop Playing a Fool Hedgehog!" Eggman Demanded, "I've Fully Upgraded Metal Sonic To Metal Sonic Mk14, He's Been Looking For A Good Race" Eggman Said.

Metal Sonic Was Way More Powerful And Looked Impossible To Beat.

But Nico Went Ballistic Killing Metal In Seconds.

"WHAT THE!" Eggman Yelled, "THIS CANNOT BE, SEND IN MORE ROBOTS".

Suddenly Hundreds Of Robots Flew Towards Nico, Causing Her to Go Ballistic, Destroying ALL OF THEM.

Before Grabbing Eggman By The Neck And Choking Him To Death.

"What's Wrong With You SONIC?!" Eggman Yelled Slowly Dying.

"I DON'T KNOW WHO THIS SONIC GUY IS, BUT I'M. NOT. SONIC" Before Dropping Eggman To The Ground, Lifeless, Dead.

Suddenly She Ran For Days Looking For A Way out of This Nightmare She Was in.

Before Running Back To Where She Had Started.

Suddenly A Figure In The Distance Walked Up To Her.

"You Ok?" The Figure Said.

"Y-Yeah...P-Please Don't Come Any Closer" Nico Asked Not Wanting To Kill Them.

It was Amy.

"You're not From Here Are You?" Amy Asked.

"N-No..." Nico Replied.

Amy Gestured For Her To Follow Them.

Suddenly Amy Took Nico To A Hidden Lab Tails Built If Anything Bad Were to Happen.

Amy Handed Nico A Bag Of Teleportation Rings.

"Y-You Should Go" Amy Said.

"But I Can't" Nico Replied, "I Killed Your Friends, Those Were Your Friends Right?"

"I'm Aware, I Know It Wasn't Your Fault, I'll manage" Amy Said, "Just Get Out Of Here Before Anything Bad Happens Ok?"

"ok" Nico Replied.

Before Using The Teleportation Rings to Leave And Go Back to Her World