Player(s) seem to always play with each other to the point it keeps building the accounts. During almost all free-for-all games they have enter they enter together. They always target the odd person out.
They also appear to support each other either one side or the other.
Yeah, it's the worse whenever you are a player who is not aware of it. Or in a group battle with them. As they decided which team wins if they are on both sides.