how to edit username?
You can't. If you ask a mentor nicely, they might be able to help.
You can't change it. You must ask the Supreme one to change it. To do that, you must blow the golden horn of destiny! I wish you luck!
Of course, to find the golden horn of destiny, you must first fight the cyclops who guard it.
Since you have no posts, just open an account with the name you want.
I rather see them fight the cyclops Is there a 'PF cave' where we keep him?
Yes, but it's at the end of the world.
Separate names with a comma.