Sol Kyung-gu (Ji Kang-in)Park Hae-soo (Han Ji-hoon)Hiroyuki Ikeuchi (Yoshinobu Ozawa)Dong-kun Yang (Section chief Hong)Lee El (Hui-won)Song Jae-rim (Jae-kyu)Park Jin-young (Jung-dae)Soo-kyung Lee (Moon Ju-young)Jin Kyung (Director Yeom Jeong-Won)Seo-Yeon Jin (Ryeon-Hui)Yi Ti Yao (Eleven)Shin Moon-Sung (Professor Wang)Nam Kyung-eup (Moon Byung-uk)Jongman Kim (Hak-cheol)Nicole Fong (Ryeon-Hui)Geo Lee (Hak-cheol)Michael Shen (Various)Choi Wonyoung (Lee Chan-young)