Anonymous player bug.

• So I was playing with my friend "GIANGAMER756" and we were creating a skyblock and some of our friends joined but the wired thing is that someone griefed everything but we don't know who. My friend gian was afk and others were building and I became invisible and wanted to found out who was the griefer but when my friend did "/effect @a clear. But when he did that an anonymous player was detected named "Processed Food" now no one was with that gamertag so I managed and kicked everyone and everything stoped at once. He can be someone like herobrine thing but we don't know. If we find out that it was a hacker I'll delete this bug report. 

No proof, because It happened quickly and I can't take photos