as Hunter Ahn
as Disciplinary Teacher
as Professor Park
as [Ik Jun's professor]
as Na Jung-beom
as Kim Seok-hyun
as Ok Ju-man
as Yoon Seung-Soo
as Do Pyeon-gang
as Noh San-woo
as Park Jin-man
as Jeon Won-Chool
as Kong Seung-Cheol
as Han Myung-Jin
as Hwang Doo-Sik
