Hello William,
The character name can be changed if it violates CoC of the game. Below is the reference for choosing character name of Avatar.
{a} Choice of Avatar Name (nick, character name)
You are not allowed to name your avatar(s) or clan in a way that carries a racist, obscene, sexual, insulting, drug abuse glorifying, threatening, religious-fanatic or anti-religious meaning; names must also not contain numbers exclusively nor violate any laws in the legal domain of our Terms and Conditions, which will result in an appropriate penalty. It is also forbidden to refer to the names (nicks) of any former or current member of the game master team and Splitscreen Studios GmbH staff in a direct or indirect way.
For detail description of CoC please visit following link.
http://forum.dinostorm.com/viewtopic.php?f=109&t=8674
Regards,
Orrire.