Lee Sae Woong, known professionally as Lee Tae Vin, is an actor, singer, dancer and former member of MYTEEN (마이틴).

He graduated from Boun Middle School and took a test for the gifted and talented which revealed his IQ of 142. As a reward, he was sent to New Zealand to continue his studies but decided to quit to pursue a career as an actor, much to his family's disapproval.