Lee Mugi published the series Pampered on Daum Webtoon from August 2013 to July 2018. His other works include Life Is a Joke, Pickaxe, Life Is a Joke 2, and Troublemaker Again, and he has been publishing the series A Different Species on Naver Webtoon since December 2019. Lee has won numerous awards, including SICAF Notable Artist of the Year in 2014, the Manhwa of Today Award by the Ministry of Culture, Sports, and Tourism in 2014, the Golden Bridge and History Bridge at the Busan Webtoon Festival in 2018, and the Grand Prize at the Bucheon International Comics Festival in 2019.