Error 505

I was playing on my PS3 with some friends. We were building houses on a superflat world during our first encounter. At first, we thought someone in our group was playing a trick on us. Basically, our houses were griefed,  and there were signs in some places. Some signs said "Give up" and "Who are you" in red lettering. Eventually we all got in one area as the host (Derp_Face_25 is his PSN name) gathered everyone in one place. He asked us who was doing this, and we all denied it,  because none of us had done anything. When he heard a TNT explosion in the distance, (Keep in mind everyone was in front of him still)  he checked it out and saw that my house's  front door was blown to pieces,  along with my garden in the front. Nnext to it was a sign, that read  "Did you really think  someone like YOU had done this? ".  He instantly said "uhh guys". And he told us to come over to him. We saw it, and I was teleported,  along with my friend (liora_skyonce)  into a pitch black room. Too dark to see anything, but we could see each others nametags. But seconds later the entity sprinted at us, and killed us,  he seemed like he was glowing,  causing me to be able to get a good look at him. He had a hood, just like Entity 303, but all his colors were inverted. I did not manage to get a screenshot or video (idk how to do that on a PS3) but I tried my best to edit a photo of entity 303 to sort of represent him. He had a grey/black cloak,  and blue eyes. Just to clarify, this was NOT ENTITY 505, this was not entity 505 that I encountered. Slot of ppl have told me that it was 505, but I assure you, this was not the case.

Anyway. When I saw him, my ps3 shut off, but I was able to turn it on just fine. I haven't seen it since, but Liora (liora_skyonce),  told me she saw him not a few days ago. I don't remember what she said, but she's started calling in the "Fate Inverter",  or something like that. Idk what I would call it, but we should find a name for it. X3. That's the most I've seen of him. Anyway, here is an example of what he looked like.