He is the first son of two brothers.
Moon Sua, Moonbin's younger sister, also has a career in the South Korean entertainment world as a member of the group BILLIE.
Moonbin has started his career in the South Korean entertainment world since he was very young.
He is known as an ulzzang or South Korean celebgram since he was six years old.
Then, in 2006, for the first time he appeared in TVXQ's music video entitled "Balloons" as little Yunho.
Moonbin got his first acting role in 2009 in the series "Boys Over Flowers" as little Kim Bum.
Moonbin then became a trainee at Fantagio Entertainment, when he was still in 5th grade.
He then joined as a full trainee during middle school.
In 2016, Moon Bin debuted as the sixth member of ASTRO.
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