First off, This is a joint account of three unknown persons who didn't even know each others names (Yeah, you read it right!)

Second, this is made because the other one wants to read stories secretly, the other to post some rants and the last one wants to write stories. So nobody even knows who they really are. That's what you called mutualism.

Call her "Styx" 
Call him "Black" or "Dark". 
Call her "Nessie"

As you can see all of us has one thing in common - We don't want to be KNOWN.

That's all, others are classified information.