I was told early on by a D&D playing uncle to never name a character after yourself because you never know what’s going to happen to them. So yeah, important advice in naming.

That said, most of these online games give a warning that the names and messages you give can be public. That’s normally about not making you Pikachu after your precious SSN, especially since they often won’t let you name him Fuckface or something because of a filter.