There is a language button below the Suffix field. It is my interpretation that if English is selected, the fields would be filled in using English. If Korean is selected , the fields would be filled in using Korea characters. I know selecting English brings up the English field for locations, while selecting Korean brings up the Korean characters for location. I would think that if the biography is in English, the fields would be in English, too. Same for Korean.
The Korean profiles that were populated from Wikipedia are either using English or Korea or sometimes Japanese Wikipedia pages. The automatic import from Wikipedia put a jumble of English, Korean, Japanese, and Chinese characters in the name and location fields that made the profiles difficult to read.