This character will be introduced in the next 24 News update. But the scratch cat is "Error" he is found inside the "See inside" when you go to costumes. He controls literally the entire inside of the project He can mimic and transform into anything he wants. The way you can tell the difference between him is he has the question mark and something grey scaled. I also in the the making of an animation when he turns into bf and turns back into himself. Been working on it for a while now. So give me some time to show you "most of it" I'll show error, error-bf, and the animation later. For anyone wondering why the BG looks like that. That is because I am making an AYs deceiver sprite showcase project where BF finds his way inside the project and meets error(OR so he thought). more details on this later so stay tuned! I'll be offline animating and doing stuff for a bit but I will try my best to respond to anything.
Error is still in his V1 stage so this isn't the final design. MADE BY @Usahuman you may not use.