The Phantom Renamer (TPR) is most likely someone you work with. He makes up nicknames for everyone and is a legend at it.
He may also be responsible for changing the name on items you own to the nickname he has kept for you.
This can be in the form of user names, digital files, etc
Person 1: Hey dude The Phantom Renamer strikes again.. look at the shared folder..
Person 2: Lmao! I wonder who TPR is?
Person 1: Legend!
Names on the shared folder:
Hank = Cal
Cal-ifornications (main character Hank Moody)