Born in 1967, Lee received a BFA and MFA in painting from Hongik University. Since 1993, he has displayed works featuring his hybrid character Atomaus in a number of solo and group exhibitions in Korea and more than 10 times abroad. Pieces depicting Atomaus, a composite of the Japanese cartoon character Atom and the Disney icon Mickey Mouse, are housed in Leeum, Samsung Museum of Art and the National Museum of Modern and Contemporary Art in Korea.