No, no se puede cambiar el nombre de una cuenta para transferir personajes, es ilegal. En estos foros no se puede escribir en otros idiomas que no sea inglés, si quieres hacer una pregunta en castellano usa http://eu.battle.net/wow/es/forum/975481/
Edit: if anyone's curious the original post is roughly: "My brother has a character he doesn't want to use in his account and I'd like to move it to mine, but it won't let me, my question is: can you change the name of the Battle.net account to so I can transfer the character?"
Well my brother has a character on your account who did not use and would like to pass it on to mine, but do not let me, the question is, you can change the name of a battle.net account to help me get pass the character?
The answer is no you can't change the name or transfer it to your account.
Ps: dear lord, it's like Babble translate all over again.