A custom report called "client hog" was created before I arrived. It shows MAC address, Usernames, MB used, length of time on, Avg Usage, Connection Mode, and Device Type. When looking at this file, randomly, there are users in the report that show all the above information but the user name. There is no pattern I have been able to figure out on how this happens.
When looking at the controller it also shows the same information as the file.