The only way to get a name change is to contact Support, and only if your previous username was an automatically generated one, or if it contained personally identifying information, such as emails, phone numbers, etc. They only let you do this once, and looking at your username, I doubt you'll be able to get it changed, but who knows?
Somewhat unrelated: I wanted to get a username change myself when I first started playing around 3-4 years ago. Glad I didn't; this username has grown on me and I like it.