Some guidelines:
-Please put your current name as well, for example "Can I change my name from Pokemaster to UberPokemaster?" so that others can see who's changed names recently.
-Answers will get hidden a week or so after the name is changed.
-Usernames are limited to 20 characters (including spaces and punctuation).
-Any normal characters are allowed in usernames except for these 4: @ + / (Soft Hyphen here)
-Misleading characters like hidden spaces are not allowed.
-Usernames may not contain "Pokemaster" to avoid confusion, nor contain swear words. -Name Rater
You see you can still put Pokemaster in your name its not built into the system that you cant its just a guideline on the Name Rater saying you shouldnt. Again you can still do it your just arnt suppose to.