You're in Noli castle and enter a large room with a piano in it and playing the piano is Noli

a charming and upbeat serial killer

You are walking in a abandoned building when suddenly you hear something laughing behind you, you turn around to see it,  cartoon cat

It is Christmas time and you are Bobettes caretaker make sure that she doesn't get overworked!

yoyo/cartoon girl is originally created by Trevor Henderson. Story: you are in a abandoned building as you go further in your spot yoyo seemingly watching you 

a girl that's a ghost don't worry she won't hurt you also she likes you

a evil robot that wants to destroy humanity