Here are some foreign power Youtubers who are active in Korea.
올리버쌤(USA)
https://www.youtube.com/channel/UCicKQUi8h4NI81wDmrDBD4A
소련여자 Soviet girl in Seoul
https://www.youtube.com/channel/UC7Krez5EI8pXKHnYWsE-zUw
영국남자: Korean Englishman
https://www.youtube.com/user/koreanenglishman