Okay so here's what you do.
First off this is exactly Like making a clan Tag.

1.Get into a Room where the game hasn't started yet.

2.Go into your Nitepr and go to Searcher.

3. Search the account name you are currently using.

4. After that, look for the First/Second 0x133 code.

5. Once you've found the First/Second 0x133 code, Copy it and paste it into your browser.

6. After you've pasted it into the browser this is where you Make your name.

7. DO NOT Change the FIRST 4 HEX's They are not apart of your name.

8. After you've Finished making your Name, Exit your Nitepr and Press Start or select to see your Finished name.

If you need any help or need the Hex codes/Symbol codes Go to a section on The forum named Clan tag Symbols and codes/ How to use them.

I hope I helped for anyone who was confused about this :)