- Chi-yong Ahn
- School Inspector
- Ryoo Byeong-Gil
- Tae-Gyoo's Line 1
- Im Chan-Woo
- Security Guard
- In-sook Choi
- School Inspector's Secretary
- Park Chul-min
- Prof. Han Kang-man
- Kim Dae-Jeong
- Karaoke Female Student 3
- Park Dan-Bi
- Student In Grade 2 Class 5
- Kim Dong Beom
- Do-il
- Oh Dong-Joon
- Student In Grade 2 Class 5
- Im Eun-Ji
- Student In Grade 2 Class 5
- Lee Eun-Yeong
- Dodgeball Girl
- Go Gil-Joo
- Student In Grade 2 Class 5
- Jung Yoo Ha
- Karaoke Female Student 1
- Jae-sang Han
- Korean Teacher
- Jang Hee-Jeong
- Student In Grade 2 Class 5
- Kim Ho-Yeon
- Teacher Next Door
- Myeong Hong-Jin
- Student In Grade 2 Class 5
- Choi Hong-Rak
- Student In Grade 2 Class 5
- Lee Hye-Ah
- Female Student
- Do Hyeon-Soo
- Student In Grade 2 Class 5
- Kim Hyeong-Geun
- Student In Grade 2 Class 5
- Sung Hyuk
- A Gym Teacher
- Ahn Hyun-Bin
- Gym Teacher
- Im Jang-Goon
- Student In Grade 2 Class 5
- Lee Jeong-eun
- Female Student #1
- Kim Jeong-Hoon
- Student In Grade 2 Class 5
- Kim Ji-Eun
- Female student #2
- Kang Ji-Hoon
- Student
- Lee Young Jin
- Librarian Yun Sang Mi
- Oh Jin-Ha
- Student in grade 2 class 5
- Sin Jin-Woo
- Student In Grade 2 Class 5
- Kim Jin-Yoon
- Student In Grade 2 Class 5
- Sang-Geun Jo
- Kim Tae-gyoo
- Jeon Joon-Hong
- Prof. Byeong-soo
- Jeon Jun-Hong
- Embassy
- Jo Sang Keun
- Kim Tae Gyu Problem Child
- Joon-hyeok Kim
- Student
- Min-su Kim
- Suspect
- Kim Kyeong-Hee
- Student In Grade 2 Class 5
- Min Kyung-jin
- Principal
- Chan-ho Lee
- Tak Teu-in
- Jong-hwan Lee
- Class Monitor
- Oh Mi-Hye
- Music Teacher
- Kang Min-Hoo
- Tae-Gyoo's Line 2
- Kim Min-Soo-Iii
- Suspect
- Kim Min-Su
- Virtual Criminal
- Jo Nam-Mi
- Student In Grade 2 Class 5
- Lee Saet-Byeol
- Screaming Girl 1
- Cho Sang-Geun
- Kim Tae-Gyu
- Jo Sang-Geun
- Kim Tae-gyoo
- Jeong Se-Hyeon
- Karaoke Female Student 1
- Yoo Seung-ho
- Han Jeong-hoon
- Kang So-ra
- Lee Da-jeong
- Song-Hyeon
- Student In Grade 2 Class 5
- Im Soo-hyang
- Fan #1
- Lim Soo-Hyang
- Lim Soo-Hyang (Fan 1)
- Jung Suk-yong
- Prof. Kang Gook-man
- Choi Sung-Kyum
- Suspect
- Kim Tae-Il
- Student In Grade 2 Class 5
- Jo Ye-Jin
- Karaoke Female Student 2
- Byeon Ye-Seong
- Student In Grade 2 Class 5
- Jeong Yeong-gi
- Student
- Lee Yeong-Jin
- Yun Sang-mi
- Lee Yeong-jin
- Sang-mi
- Sin Yoo-Ra
- Screaming Girl 2
- Ji-yeong Yoon
- Fan #2
- Jo Yoon-Hee
- English Professor
- Kim Young-woong
- History Teacher
- Rie Young-Zin
- Librarian, Sang-Mi
- Jo Yun-Hei
- Hong Ju-hee
- Jo Yun-hie
- English Professor
