Fix this, Character with that name already exists.

Interestingly enough the this is maybe possible since they rebuilt the infrastructure of our accounts with the same names. See the # on our account name? I am pretty sure at some point this was their goal.. if they are able to make part of character identification on the backend tied to our account instead this will be possible.. but thirteen years have passed and they've not done this so it could be a far cry at this point.. they would most likely need to purge the servers of all characters as this was why the servers shut down originally when the game released I had four character names. "Everyday" "Grief" "Lag" "Death" and after the server reset I didn't have these names at all anymore.. so I assume that's what the did was purged the accounts with duplicate character names.

I just had to make a character with the name I wanted followed by 20 "_" because apparently that's what we should do. It's silly.

I'm not sure this sure this is very important at least as far as I'm concerned. My character's name will be whatever I'll press randomly on the kheyboard.
On a leaguestart I might make the effort to make it something vaguely funny and offensive.

Naming yourself xXElysiaSlayerXx is all fine and nice, but I'd rather crack a smile everytime I log in clicking on my character's name ExplosiveDiarrhea.
Sometimes it even makes other people laugh too.

I don't think there's any real problem here.
At the end of the day it's just a pseudonym for a temporary character in a video game.