Germano Mosconi

Hello, before i start telling you my story, i have to make a premise: I'm Italian and i used google translate for some words i did not know, so sorry for some grammar errors.
I was playing my Minecraft Vanilla world, as i always do, when i thought "Let's see if some of my favorite YouTubers made a video". I watched some videos, but suddenly i heard a noise. It was like a woman saying something in Chinese. I returned to my Minecraft world, and i saw something written in the chat:
神狗
Suddenly, my Minecraft crashed, before i took a screenshot.
I opened the Minecraft launcher again, and my world's name changed. now its name is "Germano Mosconi". I took a screen of this:
For who is on PC it will appear here ---------------->
Do you have advice or can you explain me this? Thank you
UPDATE
So,i'm kinda scared so i'm gonna explain it fast.
I was playing Minecraft in my new Minecraft world, and i found a village. In this village, i found a village that was selling something strange: wolf's spawn eggs, pig's spawn eggs, and a sword called "Dio". In Italian this words means "God". Why was this sword with a wolf and a pig? But, most importantly, why is the name in Italian, if i play Minecraft in english? By the way, i started the world this morning, and i had no emeralds to deal with villagers. I saw a tree and i wanted to destroy it for wood, then....
why was this player in my world?MY SINGLEPALYER WORLD! This is not possible. But i did not give up: i continued to play. And this was an error. I found iron, diamond and emerald fast, so i return to the village, and he appears again. There is another screenshot
My game crashed next to i made this screenshot. Who is this player? Why is he in my world?
I still don't know
He says Italian words: "WHO IS THE STUPID THAT BEATS THE DOOR?"
What does this mean? Do you have advice or can you explain this? Is he an Herobrine/ Entity 303 type? Maybe, as that i am Italian, Herobrine/ Entity 303 takes an Italian form? Thank you
Category:Creepypasta
Category:Entities
Category:Supernatural
Category:Short Pastas