You can inform @MrDayCee that you want to change your username in his comment section. I'll quote his answer to one user:
Please send me an email at MrDayCee@armorgames.com with your request.
Make sure to add your first choice of a new username, a 2nd option (in case the first one is already in use) and a 3rd option (in case both options before are already in use)
There was one requirement before: that you need to have at least 250 quests completed. I don't know if it is current.
@remio Yes, there is a way to change your username and all the rules that were stated by @PLGuy apply. If you want to read back on them, check the featured comment at the top of my profile's comment section.
