corrupted data/Unknown data

Ok guys first things first this is no creepy pasta or any HEROBRINE freak outs ok? This is a thing I've seen and I'm gonna talk about it ok? Ok then LETS GET STARTED!!

I loaded up a minecraft world a new minecraft world and i noticed something realy odd realy quickly! it said that someone joined my game but there wasnt any gamertag! i knew this wasnt anyone joining me because i was offline on my PS3.
i looked at the arrow that indicates a player on the map and the arrow was a tan kinda colour like your skin kinda? then i keped on dieing out of no were and i was a little pissed because my iron and my wood was taken!!!!!!
then i went online and told my friend to join. and when he did he was teleported to a pit and was free falling and it teelported him back up like 10 or 11 times!!
i told him whats wrong and he said he was falling down a endles pit. 
i did research on this entity but it seems im the only one who is experincing this "THING"
leave in the comments if you experinced anything like this on the PS3 OR XBOX360.
for  now ill call this this unkown data.