At the moment there is no way to change your account name.
I'd either just remake the character, or if you're a higher level - wait it out.
I don't think there is anything in the works, but perhaps a feature will be implemented.
The game isn't too "swamped" with people at the moment, so perhaps drop Panzar an email and request it politely.
It may be declined as to not open up name-changes for every single person.
help@panzar.comYou could also try to await a response here.