Creepypasta X animatronic demon singer reader

1

Hi my names (y/n) more commonly known as KILLR which is my singer name or DoGtAg which is my creepypasta name. I'm good friends with slenderman but the others don't know me but I know them thanks to me being a dream demon and all. My big brother is Vincent or the purple guy to most people but I actually did the killing. Im also purple but I can change my skin colour to (s/c) when I want. Even though I did the killings I was never prosecuted because I hid the bodies and died from that stupid puppet immediately after. Right now I'm singing dancing with the devil because I know Sally is watching this on TV but she doesn't know that. I change my voice and appearance  so people think I'm a boy but only slender knows my real gender but not my real skin tone.
Only Vincent knows that and so far he's kept his promise of not telling anyone. Those kids knew but there dead now so hehe. Anyway after the show I got a text from slendy saying to meet him at his mansion to perform at Sally's birthday party so obviously I said yes because I owe him one anyway after nearly getting caught by the police. So after the party I headed there I of course got stalled by his proxies but I defeated them leaving them wounded but alive. When I reached the mansion I kicked the door literally off the hinges like the boss I am, when the proxies finally caught up slender was there
"We tried to stop them" said masky
"No no it's fine I'll deal with them. So what are you doing here (y/n)? Said slender
"You invited me slender remember you shit for brains" I replied
The proxies started laughing but when slender glared at them they stopped. I followed slender to the backyard where the pastas where still setting up when Jeff walked over and asked
"Who's this another cosplayer I get to kill"
"No this is KILLR who will be performing at Sally's birthday" slender replied
After that sentence he told me to go and sneak onto the sofa next to Sally without her knowing so I did she was watching one of my previous Shows where I sung dancing with the devil I said
"There my fav singer too"
She jumped and looked at me and what she said will make me laugh for all eternity
"Y-you're KILLR" while jumping to give me a big hug which of course I returned. She continued to ask why I was there so I told her everything and she ran up to slender gave him a big hug and thanked him about a million times when the fazbear crew walked over and asked what this was about so slender pointed at me
(A/N gonna underline speech now cuz it takes less time)
YOU Freddy exclaimed while pointing at me
In the flesh I replied
But we watched you die chica yelled attracting attention
Bit as you can see I'm not dead I said
Then Freddy picked me up by my neck and held me against the wall yelling at me as to why I'm here and why I don't show my real form. I told him to let me go and said id explain everything later so they did and walked away. Slender still shocked they acted that way told me to get set up on stage so I opened two portals and made the drums and guitar float through and wait for what song to play so I asked Sally what song to play since it was her birthday and she chose dancing with the devil so I began playing.