as Choi Han-gyu
as Kim Je-seok
as Kang Sang-maan
as Department Head Nam
as Jung-su
as Noh Joon-suk
as Baek Jang -ho
as Lee Young-Joon
as Chairman Kim Nam-yoon
as Oh Tae-suk
as Oh Yeong-geun
as Kim In-su
as Kim Yongchun
as Kim Seok Ju
as Park Jin-suk
as Kang Dong-hyun
as Kim Seok-joon
as Professor Kim Jin-woo
as Teacher Baek
as President Han
as Cha Jae-hwan
as Jong-goo
as Hwang Dong-woo
as Seo Dae-Seok
as Byun Dae-sung
as Chang-sik
as Cha Gi-baek
as Lee Sun-Moon
as Bang Ki-ho
as Kim Jae-man
as Yoon Myung-hoon
as Han Pan-seok
as Park Jae-hyun
as Ji Kyung-hwan
as Professor Yoon
as Park Jin-kwon
as Jang Tae-joon
as Kim Geon-pyo
as Kim Soo-bong
as Chae Byung-Hak
as Yoon Soo-ha (2006)
as Lee Hoe-young
as Manager Jin
as Jang Kil-Taek
as Chae Dae-pil
