Trust me when I say this, I have just as much a clue on what the hell my PFP is as you do if you want to ask on what it is.
What I DO know is it's Shadow Freddy. Well, the FNF mod "Ourple Guy" and its rendition of him, instead named Sinnoh. It's stuck in an arcade cabinet, can pull people inside it, and is COMPLETELY willing to torment them just because. It has the ability-albeit whether because it's in the arcade machine or just can do so-to shapeshift like a natural, albeit it does so in horrifying ways.
Oh, and it sees the meaning of life as "comeuppance". So...yeah. That's all I know on Sinnoh, and I don't intend on finding out anything else as it means talking to it, and I'm not insane.
...well, I am, but NOT THAT INSANE!