 Aki Ross 's voice actor , Ming @-@ Na Wen , was selected for a perceived fit between her personality and Aki 's . Ming @-@ Na , who found the role via her publicist , said she felt like she had given birth with her voice to the character . She gradually accustomed herself to the difficulty of working without the presence and spontaneity of real actors , and commented that the voice @-@ acting work did not take much time , as she would just go into the studio " once or twice a month for about four months " with no need for make @-@ up and costuming sessions . The workload was so light it did not interfere with her acting commitments in the television series ER . 
