Sillytrading - Creepy

Ok so, my buddy said that his buddies got hacked. I asked, Who? I was very curious about this at the time. He said his 8 friends got hacked during a warrior cat roleplay, (Dappledleafx, daredevilforlife2004, gravitypines, idkbro1, Leona0605, a new jammer,approximatelygenius, scaryendershadow, and Xilralord.) They were in Tigris, it was empty at the time. When a creepy koala with the name Silly trading just popped up where they were roleplaying. One of them asked, ( Not specified user ) ' Hey we are doing a roleplay right now can you please leave?' No response. A couple seconds later that person was logged off. Everyone waited for him/her to come back thinking he/she must have crashed. They never did, never have. They were a Koala dressed in full black after a while. Everyone seemed normal thinking something must have happened in rl where he/she had to go. Then 2 more friends were gone. They seemed normal but have not been on more than 30 days. Another one left, they turned black just like the other one. and last but not least, the only friend left and my buddy hid in a buddies-only locked den. After that his buddy left... But, he actully told me their user, they have been on today. The user was Approximatelygenius he was the black user! But not quite the other black figure was actually Xilralord. in both of their dens were 2 torches. I'm not sure what that could mean but, it had to mean something. Leona's den was locked for all jammers (My buddy can't get into her den) meaning she was on the past few updates but i need help solving this.

Extra information- 

'''my buddy was jumpy90. '''

 hacker was for fact sillytrading  

my user is demskittleztho

Please help me solve this or at least get something out of my buddy. They won't tell me anything else. Why are they hiding it? I need an investigator.