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'''Mark Lee ''' (마크이) August 2, 1999. Known professionally as '''Mark ''', is a Canadian rapper and singer-songwriter based in South Korea. He is best known as a member of the South Korean boy group '''NCT ''' and its sub-units '''NCT U''', '''NCT 127''', and '''NCT DREAM'''. Mark made his debut in April 2016 as a member of rotational unit NCT U. Became a member of Seoul-based fixed unit NCT 127 in July 2016 and also a member of NCT DREAM in August 2016. In October 2019, Mark debuted as a member of the supergroup '''SuperM'''.